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Finding the Fourth Proportional to 534,747.60, 802,121.40 and 429,771.60

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Solution

The fourth proportional to 534,747.60, 802,121.40 and 429,771.60 is: 644,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,747.60 : 802,121.40 = 429,771.60 : x
  2. Step 2: Convert to fraction form
    534,747.60/802,121.40 = 429,771.60/x
  3. Step 3: Cross multiply
    534,747.60x = 802,121.40 × 429,771.60
  4. Step 4: Simplify right side
    534,747.60x = 344,728,997,472.24
  5. Step 5: Solve for x
    x = 344,728,997,472.24/534,747.60
  6. Step 6: Final answer
    x = 644,657.40

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Double scale
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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.