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Finding the Fourth Proportional to 491,726.40, 737,589.60 and 487,060.80

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Solution

The fourth proportional to 491,726.40, 737,589.60 and 487,060.80 is: 730,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,726.40 : 737,589.60 = 487,060.80 : x
  2. Step 2: Convert to fraction form
    491,726.40/737,589.60 = 487,060.80/x
  3. Step 3: Cross multiply
    491,726.40x = 737,589.60 × 487,060.80
  4. Step 4: Simplify right side
    491,726.40x = 359,250,980,647.68
  5. Step 5: Solve for x
    x = 359,250,980,647.68/491,726.40
  6. Step 6: Final answer
    x = 730,591.20

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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.