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Finding the Fourth Proportional to 515,617.74, 773,414.72 and 303,729.80

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Solution

The fourth proportional to 515,617.74, 773,414.72 and 303,729.80 is: 455,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,617.74 : 773,414.72 = 303,729.80 : x
  2. Step 2: Convert to fraction form
    515,617.74/773,414.72 = 303,729.80/x
  3. Step 3: Cross multiply
    515,617.74x = 773,414.72 × 303,729.80
  4. Step 4: Simplify right side
    515,617.74x = 234,909,098,222.66
  5. Step 5: Solve for x
    x = 234,909,098,222.66/515,617.74
  6. Step 6: Final answer
    x = 455,587.70

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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.