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Finding the Fourth Proportional to 755,252.80, 1,132,879.20 and 725,728.30

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Solution

The fourth proportional to 755,252.80, 1,132,879.20 and 725,728.30 is: 1,088,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,252.80 : 1,132,879.20 = 725,728.30 : x
  2. Step 2: Convert to fraction form
    755,252.80/1,132,879.20 = 725,728.30/x
  3. Step 3: Cross multiply
    755,252.80x = 1,132,879.20 × 725,728.30
  4. Step 4: Simplify right side
    755,252.80x = 822,162,495,921.36
  5. Step 5: Solve for x
    x = 822,162,495,921.36/755,252.80
  6. Step 6: Final answer
    x = 1,088,592.45

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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.