Home / 643,001.46-887,328.80-356,519.04

Finding the Fourth Proportional to 643,001.46, 887,328.80 and 356,519.04

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Solution

The fourth proportional to 643,001.46, 887,328.80 and 356,519.04 is: 491,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,001.46 : 887,328.80 = 356,519.04 : x
  2. Step 2: Convert to fraction form
    643,001.46/887,328.80 = 356,519.04/x
  3. Step 3: Cross multiply
    643,001.46x = 887,328.80 × 356,519.04
  4. Step 4: Simplify right side
    643,001.46x = 316,349,611,940.35
  5. Step 5: Solve for x
    x = 316,349,611,940.35/643,001.46
  6. Step 6: Final answer
    x = 491,988.95

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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.