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Finding the Fourth Proportional to 497,278.60, 744,168.30 and 455,288.20

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Solution

The fourth proportional to 497,278.60, 744,168.30 and 455,288.20 is: 681,330.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,278.60 : 744,168.30 = 455,288.20 : x
  2. Step 2: Convert to fraction form
    497,278.60/744,168.30 = 455,288.20/x
  3. Step 3: Cross multiply
    497,278.60x = 744,168.30 × 455,288.20
  4. Step 4: Simplify right side
    497,278.60x = 338,811,045,804.06
  5. Step 5: Solve for x
    x = 338,811,045,804.06/497,278.60
  6. Step 6: Final answer
    x = 681,330.44

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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.