Home / 717,940,716.76-990,834,359.46-420,832,599.40

Finding the Fourth Proportional to 717,940,716.76, 990,834,359.46 and 420,832,599.40

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Solution

The fourth proportional to 717,940,716.76, 990,834,359.46 and 420,832,599.40 is: 580,793,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,940,716.76 : 990,834,359.46 = 420,832,599.40 : x
  2. Step 2: Convert to fraction form
    717,940,716.76/990,834,359.46 = 420,832,599.40/x
  3. Step 3: Cross multiply
    717,940,716.76x = 990,834,359.46 × 420,832,599.40
  4. Step 4: Simplify right side
    717,940,716.76x = 416,975,399,066,385,792
  5. Step 5: Solve for x
    x = 416,975,399,066,385,792/717,940,716.76
  6. Step 6: Final answer
    x = 580,793,635.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.