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Finding the Fourth Proportional to 646,906.10, 970,359.15 and 488,275.70

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Solution

The fourth proportional to 646,906.10, 970,359.15 and 488,275.70 is: 732,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,906.10 : 970,359.15 = 488,275.70 : x
  2. Step 2: Convert to fraction form
    646,906.10/970,359.15 = 488,275.70/x
  3. Step 3: Cross multiply
    646,906.10x = 970,359.15 × 488,275.70
  4. Step 4: Simplify right side
    646,906.10x = 473,802,793,217.66
  5. Step 5: Solve for x
    x = 473,802,793,217.66/646,906.10
  6. Step 6: Final answer
    x = 732,413.55

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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.