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Finding the Fourth Proportional to 531,327.60, 734,165.40 and 424,777.20

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Solution

The fourth proportional to 531,327.60, 734,165.40 and 424,777.20 is: 586,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,327.60 : 734,165.40 = 424,777.20 : x
  2. Step 2: Convert to fraction form
    531,327.60/734,165.40 = 424,777.20/x
  3. Step 3: Cross multiply
    531,327.60x = 734,165.40 × 424,777.20
  4. Step 4: Simplify right side
    531,327.60x = 311,856,722,948.88
  5. Step 5: Solve for x
    x = 311,856,722,948.88/531,327.60
  6. Step 6: Final answer
    x = 586,938.69

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.