Home / 724,443.40-1,086,665.10-693,728.20

Finding the Fourth Proportional to 724,443.40, 1,086,665.10 and 693,728.20

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Solution

The fourth proportional to 724,443.40, 1,086,665.10 and 693,728.20 is: 1,040,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,443.40 : 1,086,665.10 = 693,728.20 : x
  2. Step 2: Convert to fraction form
    724,443.40/1,086,665.10 = 693,728.20/x
  3. Step 3: Cross multiply
    724,443.40x = 1,086,665.10 × 693,728.20
  4. Step 4: Simplify right side
    724,443.40x = 753,850,223,825.82
  5. Step 5: Solve for x
    x = 753,850,223,825.82/724,443.40
  6. Step 6: Final answer
    x = 1,040,592.30

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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.