Home / 717,493,849.92-990,141,503.04-387,468,979.20

Finding the Fourth Proportional to 717,493,849.92, 990,141,503.04 and 387,468,979.20

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Solution

The fourth proportional to 717,493,849.92, 990,141,503.04 and 387,468,979.20 is: 534,707,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,493,849.92 : 990,141,503.04 = 387,468,979.20 : x
  2. Step 2: Convert to fraction form
    717,493,849.92/990,141,503.04 = 387,468,979.20/x
  3. Step 3: Cross multiply
    717,493,849.92x = 990,141,503.04 × 387,468,979.20
  4. Step 4: Simplify right side
    717,493,849.92x = 383,649,117,446,462,464
  5. Step 5: Solve for x
    x = 383,649,117,446,462,464/717,493,849.92
  6. Step 6: Final answer
    x = 534,707,185.98

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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.