Home / 747,234.20-1,119,620.10-431,139.80

Finding the Fourth Proportional to 747,234.20, 1,119,620.10 and 431,139.80

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Solution

The fourth proportional to 747,234.20, 1,119,620.10 and 431,139.80 is: 645,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,234.20 : 1,119,620.10 = 431,139.80 : x
  2. Step 2: Convert to fraction form
    747,234.20/1,119,620.10 = 431,139.80/x
  3. Step 3: Cross multiply
    747,234.20x = 1,119,620.10 × 431,139.80
  4. Step 4: Simplify right side
    747,234.20x = 482,712,785,989.98
  5. Step 5: Solve for x
    x = 482,712,785,989.98/747,234.20
  6. Step 6: Final answer
    x = 645,999.32

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1.5x scale

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.