Home / 784,721.20-1,177,138.89-328,854.85

Finding the Fourth Proportional to 784,721.20, 1,177,138.89 and 328,854.85

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Solution

The fourth proportional to 784,721.20, 1,177,138.89 and 328,854.85 is: 493,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,721.20 : 1,177,138.89 = 328,854.85 : x
  2. Step 2: Convert to fraction form
    784,721.20/1,177,138.89 = 328,854.85/x
  3. Step 3: Cross multiply
    784,721.20x = 1,177,138.89 × 328,854.85
  4. Step 4: Simplify right side
    784,721.20x = 387,107,833,100.12
  5. Step 5: Solve for x
    x = 387,107,833,100.12/784,721.20
  6. Step 6: Final answer
    x = 493,306.20

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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.