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Finding the Fourth Proportional to 534,760.60, 802,140.90 and 429,784.60

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Solution

The fourth proportional to 534,760.60, 802,140.90 and 429,784.60 is: 644,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,760.60 : 802,140.90 = 429,784.60 : x
  2. Step 2: Convert to fraction form
    534,760.60/802,140.90 = 429,784.60/x
  3. Step 3: Cross multiply
    534,760.60x = 802,140.90 × 429,784.60
  4. Step 4: Simplify right side
    534,760.60x = 344,747,805,850.14
  5. Step 5: Solve for x
    x = 344,747,805,850.14/534,760.60
  6. Step 6: Final answer
    x = 644,676.90

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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.