Home / 728,410.80-1,092,616.20-560,254.80

Finding the Fourth Proportional to 728,410.80, 1,092,616.20 and 560,254.80

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Solution

The fourth proportional to 728,410.80, 1,092,616.20 and 560,254.80 is: 840,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,410.80 : 1,092,616.20 = 560,254.80 : x
  2. Step 2: Convert to fraction form
    728,410.80/1,092,616.20 = 560,254.80/x
  3. Step 3: Cross multiply
    728,410.80x = 1,092,616.20 × 560,254.80
  4. Step 4: Simplify right side
    728,410.80x = 612,143,470,607.76
  5. Step 5: Solve for x
    x = 612,143,470,607.76/728,410.80
  6. Step 6: Final answer
    x = 840,382.20

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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.