Home / 641,891.34-885,823.92-351,515.16

Finding the Fourth Proportional to 641,891.34, 885,823.92 and 351,515.16

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Solution

The fourth proportional to 641,891.34, 885,823.92 and 351,515.16 is: 485,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,891.34 : 885,823.92 = 351,515.16 : x
  2. Step 2: Convert to fraction form
    641,891.34/885,823.92 = 351,515.16/x
  3. Step 3: Cross multiply
    641,891.34x = 885,823.92 × 351,515.16
  4. Step 4: Simplify right side
    641,891.34x = 311,380,536,970.63
  5. Step 5: Solve for x
    x = 311,380,536,970.63/641,891.34
  6. Step 6: Final answer
    x = 485,098.52

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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.