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Finding the Fourth Proportional to 491,625.20, 737,437.80 and 402,978.80

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Solution

The fourth proportional to 491,625.20, 737,437.80 and 402,978.80 is: 604,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,625.20 : 737,437.80 = 402,978.80 : x
  2. Step 2: Convert to fraction form
    491,625.20/737,437.80 = 402,978.80/x
  3. Step 3: Cross multiply
    491,625.20x = 737,437.80 × 402,978.80
  4. Step 4: Simplify right side
    491,625.20x = 297,171,799,718.64
  5. Step 5: Solve for x
    x = 297,171,799,718.64/491,625.20
  6. Step 6: Final answer
    x = 604,468.20

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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.