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Finding the Fourth Proportional to 480,902.60, 721,353.90 and 460,425.80

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Solution

The fourth proportional to 480,902.60, 721,353.90 and 460,425.80 is: 690,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,902.60 : 721,353.90 = 460,425.80 : x
  2. Step 2: Convert to fraction form
    480,902.60/721,353.90 = 460,425.80/x
  3. Step 3: Cross multiply
    480,902.60x = 721,353.90 × 460,425.80
  4. Step 4: Simplify right side
    480,902.60x = 332,129,946,490.62
  5. Step 5: Solve for x
    x = 332,129,946,490.62/480,902.60
  6. Step 6: Final answer
    x = 690,638.70

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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.