Home / 1,121,010,679.80-1,681,516,019.70-753,678,660.60

Finding the Fourth Proportional to 1,121,010,679.80, 1,681,516,019.70 and 753,678,660.60

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Solution

The fourth proportional to 1,121,010,679.80, 1,681,516,019.70 and 753,678,660.60 is: 1,130,517,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,679.80 : 1,681,516,019.70 = 753,678,660.60 : x
  2. Step 2: Convert to fraction form
    1,121,010,679.80/1,681,516,019.70 = 753,678,660.60/x
  3. Step 3: Cross multiply
    1,121,010,679.80x = 1,681,516,019.70 × 753,678,660.60
  4. Step 4: Simplify right side
    1,121,010,679.80x = 1,267,322,741,504,939,264
  5. Step 5: Solve for x
    x = 1,267,322,741,504,939,264/1,121,010,679.80
  6. Step 6: Final answer
    x = 1,130,517,990.90

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Double scale
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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.