Home / 724,407.60-1,086,611.40-251,140.80

Finding the Fourth Proportional to 724,407.60, 1,086,611.40 and 251,140.80

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Solution

The fourth proportional to 724,407.60, 1,086,611.40 and 251,140.80 is: 376,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,407.60 : 1,086,611.40 = 251,140.80 : x
  2. Step 2: Convert to fraction form
    724,407.60/1,086,611.40 = 251,140.80/x
  3. Step 3: Cross multiply
    724,407.60x = 1,086,611.40 × 251,140.80
  4. Step 4: Simplify right side
    724,407.60x = 272,892,456,285.12
  5. Step 5: Solve for x
    x = 272,892,456,285.12/724,407.60
  6. Step 6: Final answer
    x = 376,711.20

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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.