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Finding the Fourth Proportional to 561,707.20, 842,560.80 and 491,723.20

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Solution

The fourth proportional to 561,707.20, 842,560.80 and 491,723.20 is: 737,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,707.20 : 842,560.80 = 491,723.20 : x
  2. Step 2: Convert to fraction form
    561,707.20/842,560.80 = 491,723.20/x
  3. Step 3: Cross multiply
    561,707.20x = 842,560.80 × 491,723.20
  4. Step 4: Simplify right side
    561,707.20x = 414,306,692,770.56
  5. Step 5: Solve for x
    x = 414,306,692,770.56/561,707.20
  6. Step 6: Final answer
    x = 737,584.80

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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.