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Finding the Fourth Proportional to 580,862.20, 871,293.30 and 487,550.20

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Solution

The fourth proportional to 580,862.20, 871,293.30 and 487,550.20 is: 731,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,862.20 : 871,293.30 = 487,550.20 : x
  2. Step 2: Convert to fraction form
    580,862.20/871,293.30 = 487,550.20/x
  3. Step 3: Cross multiply
    580,862.20x = 871,293.30 × 487,550.20
  4. Step 4: Simplify right side
    580,862.20x = 424,799,222,673.66
  5. Step 5: Solve for x
    x = 424,799,222,673.66/580,862.20
  6. Step 6: Final answer
    x = 731,325.30

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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.