Home / 717,940,715.76-990,834,358.08-420,832,598.40

Finding the Fourth Proportional to 717,940,715.76, 990,834,358.08 and 420,832,598.40

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Solution

The fourth proportional to 717,940,715.76, 990,834,358.08 and 420,832,598.40 is: 580,793,634.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,940,715.76 : 990,834,358.08 = 420,832,598.40 : x
  2. Step 2: Convert to fraction form
    717,940,715.76/990,834,358.08 = 420,832,598.40/x
  3. Step 3: Cross multiply
    717,940,715.76x = 990,834,358.08 × 420,832,598.40
  4. Step 4: Simplify right side
    717,940,715.76x = 416,975,397,494,802,432
  5. Step 5: Solve for x
    x = 416,975,397,494,802,432/717,940,715.76
  6. Step 6: Final answer
    x = 580,793,634.27

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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.