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Finding the Fourth Proportional to 417,758.80, 626,638.20 and 372,269.20

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Solution

The fourth proportional to 417,758.80, 626,638.20 and 372,269.20 is: 558,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,758.80 : 626,638.20 = 372,269.20 : x
  2. Step 2: Convert to fraction form
    417,758.80/626,638.20 = 372,269.20/x
  3. Step 3: Cross multiply
    417,758.80x = 626,638.20 × 372,269.20
  4. Step 4: Simplify right side
    417,758.80x = 233,278,101,403.44
  5. Step 5: Solve for x
    x = 233,278,101,403.44/417,758.80
  6. Step 6: Final answer
    x = 558,403.80

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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.