Home / 724,497.40-1,086,746.10-458,558.20

Finding the Fourth Proportional to 724,497.40, 1,086,746.10 and 458,558.20

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Solution

The fourth proportional to 724,497.40, 1,086,746.10 and 458,558.20 is: 687,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,497.40 : 1,086,746.10 = 458,558.20 : x
  2. Step 2: Convert to fraction form
    724,497.40/1,086,746.10 = 458,558.20/x
  3. Step 3: Cross multiply
    724,497.40x = 1,086,746.10 × 458,558.20
  4. Step 4: Simplify right side
    724,497.40x = 498,336,335,473.02
  5. Step 5: Solve for x
    x = 498,336,335,473.02/724,497.40
  6. Step 6: Final answer
    x = 687,837.30

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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.