Home / 721,046.20-1,081,569.30-553,084.60

Finding the Fourth Proportional to 721,046.20, 1,081,569.30 and 553,084.60

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Solution

The fourth proportional to 721,046.20, 1,081,569.30 and 553,084.60 is: 829,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,046.20 : 1,081,569.30 = 553,084.60 : x
  2. Step 2: Convert to fraction form
    721,046.20/1,081,569.30 = 553,084.60/x
  3. Step 3: Cross multiply
    721,046.20x = 1,081,569.30 × 553,084.60
  4. Step 4: Simplify right side
    721,046.20x = 598,199,323,662.78
  5. Step 5: Solve for x
    x = 598,199,323,662.78/721,046.20
  6. Step 6: Final answer
    x = 829,626.90

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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.