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Finding the Fourth Proportional to 534,748.60, 802,122.90 and 429,772.60

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Solution

The fourth proportional to 534,748.60, 802,122.90 and 429,772.60 is: 644,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,748.60 : 802,122.90 = 429,772.60 : x
  2. Step 2: Convert to fraction form
    534,748.60/802,122.90 = 429,772.60/x
  3. Step 3: Cross multiply
    534,748.60x = 802,122.90 × 429,772.60
  4. Step 4: Simplify right side
    534,748.60x = 344,730,444,252.54
  5. Step 5: Solve for x
    x = 344,730,444,252.54/534,748.60
  6. Step 6: Final answer
    x = 644,658.90

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Similar ratio
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1.5x scale

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.