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Finding the Fourth Proportional to 632,638.80, 947,575.80 and 491,288.40

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Solution

The fourth proportional to 632,638.80, 947,575.80 and 491,288.40 is: 735,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,638.80 : 947,575.80 = 491,288.40 : x
  2. Step 2: Convert to fraction form
    632,638.80/947,575.80 = 491,288.40/x
  3. Step 3: Cross multiply
    632,638.80x = 947,575.80 × 491,288.40
  4. Step 4: Simplify right side
    632,638.80x = 465,532,998,660.72
  5. Step 5: Solve for x
    x = 465,532,998,660.72/632,638.80
  6. Step 6: Final answer
    x = 735,859.07

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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.