Home / 645,350.40-968,025.60-329,702.40

Finding the Fourth Proportional to 645,350.40, 968,025.60 and 329,702.40

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Solution

The fourth proportional to 645,350.40, 968,025.60 and 329,702.40 is: 494,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,350.40 : 968,025.60 = 329,702.40 : x
  2. Step 2: Convert to fraction form
    645,350.40/968,025.60 = 329,702.40/x
  3. Step 3: Cross multiply
    645,350.40x = 968,025.60 × 329,702.40
  4. Step 4: Simplify right side
    645,350.40x = 319,160,363,581.44
  5. Step 5: Solve for x
    x = 319,160,363,581.44/645,350.40
  6. Step 6: Final answer
    x = 494,553.60

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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.