Home / 717,143,935.50-989,632,502.96-399,587,773.86

Finding the Fourth Proportional to 717,143,935.50, 989,632,502.96 and 399,587,773.86

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Solution

The fourth proportional to 717,143,935.50, 989,632,502.96 and 399,587,773.86 is: 551,416,569.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,935.50 : 989,632,502.96 = 399,587,773.86 : x
  2. Step 2: Convert to fraction form
    717,143,935.50/989,632,502.96 = 399,587,773.86/x
  3. Step 3: Cross multiply
    717,143,935.50x = 989,632,502.96 × 399,587,773.86
  4. Step 4: Simplify right side
    717,143,935.50x = 395,445,048,795,288,384
  5. Step 5: Solve for x
    x = 395,445,048,795,288,384/717,143,935.50
  6. Step 6: Final answer
    x = 551,416,569.56

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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.