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Finding the Fourth Proportional to 646,867.40, 970,301.10 and 292,281.80

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Solution

The fourth proportional to 646,867.40, 970,301.10 and 292,281.80 is: 438,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,867.40 : 970,301.10 = 292,281.80 : x
  2. Step 2: Convert to fraction form
    646,867.40/970,301.10 = 292,281.80/x
  3. Step 3: Cross multiply
    646,867.40x = 970,301.10 × 292,281.80
  4. Step 4: Simplify right side
    646,867.40x = 283,601,352,049.98
  5. Step 5: Solve for x
    x = 283,601,352,049.98/646,867.40
  6. Step 6: Final answer
    x = 438,422.70

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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.