Home / 717,143,937.46-989,632,505.76-399,587,775.82

Finding the Fourth Proportional to 717,143,937.46, 989,632,505.76 and 399,587,775.82

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Solution

The fourth proportional to 717,143,937.46, 989,632,505.76 and 399,587,775.82 is: 551,416,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,937.46 : 989,632,505.76 = 399,587,775.82 : x
  2. Step 2: Convert to fraction form
    717,143,937.46/989,632,505.76 = 399,587,775.82/x
  3. Step 3: Cross multiply
    717,143,937.46x = 989,632,505.76 × 399,587,775.82
  4. Step 4: Simplify right side
    717,143,937.46x = 395,445,051,855,811,712
  5. Step 5: Solve for x
    x = 395,445,051,855,811,712/717,143,937.46
  6. Step 6: Final answer
    x = 551,416,572.32

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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.