Home / 642,487.44-886,634.28-356,005.20

Finding the Fourth Proportional to 642,487.44, 886,634.28 and 356,005.20

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Solution

The fourth proportional to 642,487.44, 886,634.28 and 356,005.20 is: 491,288.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,487.44 : 886,634.28 = 356,005.20 : x
  2. Step 2: Convert to fraction form
    642,487.44/886,634.28 = 356,005.20/x
  3. Step 3: Cross multiply
    642,487.44x = 886,634.28 × 356,005.20
  4. Step 4: Simplify right side
    642,487.44x = 315,646,414,178.26
  5. Step 5: Solve for x
    x = 315,646,414,178.26/642,487.44
  6. Step 6: Final answer
    x = 491,288.07

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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.