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Finding the Fourth Proportional to 501,505.62, 691,557.43 and 429,147.95

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Solution

The fourth proportional to 501,505.62, 691,557.43 and 429,147.95 is: 591,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,505.62 : 691,557.43 = 429,147.95 : x
  2. Step 2: Convert to fraction form
    501,505.62/691,557.43 = 429,147.95/x
  3. Step 3: Cross multiply
    501,505.62x = 691,557.43 × 429,147.95
  4. Step 4: Simplify right side
    501,505.62x = 296,780,451,246.03
  5. Step 5: Solve for x
    x = 296,780,451,246.03/501,505.62
  6. Step 6: Final answer
    x = 591,778.91

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1.5x scale

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.