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Finding the Fourth Proportional to 514,901.20, 772,351.80 and 479,909.20

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Solution

The fourth proportional to 514,901.20, 772,351.80 and 479,909.20 is: 719,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,901.20 : 772,351.80 = 479,909.20 : x
  2. Step 2: Convert to fraction form
    514,901.20/772,351.80 = 479,909.20/x
  3. Step 3: Cross multiply
    514,901.20x = 772,351.80 × 479,909.20
  4. Step 4: Simplify right side
    514,901.20x = 370,658,734,456.56
  5. Step 5: Solve for x
    x = 370,658,734,456.56/514,901.20
  6. Step 6: Final answer
    x = 719,863.80

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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.