Home / 820,657.18-1,132,695.84-481,234.78

Finding the Fourth Proportional to 820,657.18, 1,132,695.84 and 481,234.78

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Solution

The fourth proportional to 820,657.18, 1,132,695.84 and 481,234.78 is: 664,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,657.18 : 1,132,695.84 = 481,234.78 : x
  2. Step 2: Convert to fraction form
    820,657.18/1,132,695.84 = 481,234.78/x
  3. Step 3: Cross multiply
    820,657.18x = 1,132,695.84 × 481,234.78
  4. Step 4: Simplify right side
    820,657.18x = 545,092,633,369.32
  5. Step 5: Solve for x
    x = 545,092,633,369.32/820,657.18
  6. Step 6: Final answer
    x = 664,214.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.