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Finding the Fourth Proportional to 639,020.46, 881,843.31 and 352,552.62

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Solution

The fourth proportional to 639,020.46, 881,843.31 and 352,552.62 is: 486,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,020.46 : 881,843.31 = 352,552.62 : x
  2. Step 2: Convert to fraction form
    639,020.46/881,843.31 = 352,552.62/x
  3. Step 3: Cross multiply
    639,020.46x = 881,843.31 × 352,552.62
  4. Step 4: Simplify right side
    639,020.46x = 310,896,169,369.97
  5. Step 5: Solve for x
    x = 310,896,169,369.97/639,020.46
  6. Step 6: Final answer
    x = 486,519.90

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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.