Home / 1,120,628,549.60-1,681,194,766.80-660,329,784.80

Finding the Fourth Proportional to 1,120,628,549.60, 1,681,194,766.80 and 660,329,784.80

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Solution

The fourth proportional to 1,120,628,549.60, 1,681,194,766.80 and 660,329,784.80 is: 990,643,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,628,549.60 : 1,681,194,766.80 = 660,329,784.80 : x
  2. Step 2: Convert to fraction form
    1,120,628,549.60/1,681,194,766.80 = 660,329,784.80/x
  3. Step 3: Cross multiply
    1,120,628,549.60x = 1,681,194,766.80 × 660,329,784.80
  4. Step 4: Simplify right side
    1,120,628,549.60x = 1,110,142,978,567,930,112
  5. Step 5: Solve for x
    x = 1,110,142,978,567,930,112/1,120,628,549.60
  6. Step 6: Final answer
    x = 990,643,134.13

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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.