Home / 1,100,290,665.40-1,650,435,998.10-991,451,548.60

Finding the Fourth Proportional to 1,100,290,665.40, 1,650,435,998.10 and 991,451,548.60

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Solution

The fourth proportional to 1,100,290,665.40, 1,650,435,998.10 and 991,451,548.60 is: 1,487,177,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,290,665.40 : 1,650,435,998.10 = 991,451,548.60 : x
  2. Step 2: Convert to fraction form
    1,100,290,665.40/1,650,435,998.10 = 991,451,548.60/x
  3. Step 3: Cross multiply
    1,100,290,665.40x = 1,650,435,998.10 × 991,451,548.60
  4. Step 4: Simplify right side
    1,100,290,665.40x = 1,636,327,326,181,431,552
  5. Step 5: Solve for x
    x = 1,636,327,326,181,431,552/1,100,290,665.40
  6. Step 6: Final answer
    x = 1,487,177,322.90

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Half scale
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Double scale
Find fourth proportional to 1,100,290,666.40, 1,650,435,999.60 and 991,451,549.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.