Home / 641,943.09-885,895.38-351,567

Finding the Fourth Proportional to 641,943.09, 885,895.38 and 351,567

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Solution

The fourth proportional to 641,943.09, 885,895.38 and 351,567 is: 485,170.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,943.09 : 885,895.38 = 351,567 : x
  2. Step 2: Convert to fraction form
    641,943.09/885,895.38 = 351,567/x
  3. Step 3: Cross multiply
    641,943.09x = 885,895.38 × 351,567
  4. Step 4: Simplify right side
    641,943.09x = 311,451,581,060.46
  5. Step 5: Solve for x
    x = 311,451,581,060.46/641,943.09
  6. Step 6: Final answer
    x = 485,170.08

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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.