Home / 747,458.20-1,119,956.10-431,363.80

Finding the Fourth Proportional to 747,458.20, 1,119,956.10 and 431,363.80

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Solution

The fourth proportional to 747,458.20, 1,119,956.10 and 431,363.80 is: 646,335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,458.20 : 1,119,956.10 = 431,363.80 : x
  2. Step 2: Convert to fraction form
    747,458.20/1,119,956.10 = 431,363.80/x
  3. Step 3: Cross multiply
    747,458.20x = 1,119,956.10 × 431,363.80
  4. Step 4: Simplify right side
    747,458.20x = 483,108,519,129.18
  5. Step 5: Solve for x
    x = 483,108,519,129.18/747,458.20
  6. Step 6: Final answer
    x = 646,335.17

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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.