Home / 730,639.68-1,008,279.04-408,349.60

Finding the Fourth Proportional to 730,639.68, 1,008,279.04 and 408,349.60

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Solution

The fourth proportional to 730,639.68, 1,008,279.04 and 408,349.60 is: 563,520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,639.68 : 1,008,279.04 = 408,349.60 : x
  2. Step 2: Convert to fraction form
    730,639.68/1,008,279.04 = 408,349.60/x
  3. Step 3: Cross multiply
    730,639.68x = 1,008,279.04 × 408,349.60
  4. Step 4: Simplify right side
    730,639.68x = 411,730,342,672.38
  5. Step 5: Solve for x
    x = 411,730,342,672.38/730,639.68
  6. Step 6: Final answer
    x = 563,520.37

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.