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Finding the Fourth Proportional to 497,689.60, 746,534.40 and 272,963.20

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Solution

The fourth proportional to 497,689.60, 746,534.40 and 272,963.20 is: 409,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,689.60 : 746,534.40 = 272,963.20 : x
  2. Step 2: Convert to fraction form
    497,689.60/746,534.40 = 272,963.20/x
  3. Step 3: Cross multiply
    497,689.60x = 746,534.40 × 272,963.20
  4. Step 4: Simplify right side
    497,689.60x = 203,776,418,734.08
  5. Step 5: Solve for x
    x = 203,776,418,734.08/497,689.60
  6. Step 6: Final answer
    x = 409,444.80

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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.