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Finding the Fourth Proportional to 632,644.80, 947,584.80 and 491,294.40

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Solution

The fourth proportional to 632,644.80, 947,584.80 and 491,294.40 is: 735,868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,644.80 : 947,584.80 = 491,294.40 : x
  2. Step 2: Convert to fraction form
    632,644.80/947,584.80 = 491,294.40/x
  3. Step 3: Cross multiply
    632,644.80x = 947,584.80 × 491,294.40
  4. Step 4: Simplify right side
    632,644.80x = 465,543,105,765.12
  5. Step 5: Solve for x
    x = 465,543,105,765.12/632,644.80
  6. Step 6: Final answer
    x = 735,868.07

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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.