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Finding the Fourth Proportional to 491,215.76, 736,781.42 and 299,040.30

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Solution

The fourth proportional to 491,215.76, 736,781.42 and 299,040.30 is: 448,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,215.76 : 736,781.42 = 299,040.30 : x
  2. Step 2: Convert to fraction form
    491,215.76/736,781.42 = 299,040.30/x
  3. Step 3: Cross multiply
    491,215.76x = 736,781.42 × 299,040.30
  4. Step 4: Simplify right side
    491,215.76x = 220,327,337,618.83
  5. Step 5: Solve for x
    x = 220,327,337,618.83/491,215.76
  6. Step 6: Final answer
    x = 448,534.75

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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.