Home / 724,456.40-1,086,684.60-409,528.40

Finding the Fourth Proportional to 724,456.40, 1,086,684.60 and 409,528.40

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Solution

The fourth proportional to 724,456.40, 1,086,684.60 and 409,528.40 is: 614,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,456.40 : 1,086,684.60 = 409,528.40 : x
  2. Step 2: Convert to fraction form
    724,456.40/1,086,684.60 = 409,528.40/x
  3. Step 3: Cross multiply
    724,456.40x = 1,086,684.60 × 409,528.40
  4. Step 4: Simplify right side
    724,456.40x = 445,028,205,542.64
  5. Step 5: Solve for x
    x = 445,028,205,542.64/724,456.40
  6. Step 6: Final answer
    x = 614,292.60

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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.