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Finding the Fourth Proportional to 658,472.76, 987,695.16 and 303,486.78

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Solution

The fourth proportional to 658,472.76, 987,695.16 and 303,486.78 is: 455,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,472.76 : 987,695.16 = 303,486.78 : x
  2. Step 2: Convert to fraction form
    658,472.76/987,695.16 = 303,486.78/x
  3. Step 3: Cross multiply
    658,472.76x = 987,695.16 × 303,486.78
  4. Step 4: Simplify right side
    658,472.76x = 299,752,423,729.99
  5. Step 5: Solve for x
    x = 299,752,423,729.99/658,472.76
  6. Step 6: Final answer
    x = 455,223.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.