Home / 642,829.15-887,044.53-356,324.86

Finding the Fourth Proportional to 642,829.15, 887,044.53 and 356,324.86

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Solution

The fourth proportional to 642,829.15, 887,044.53 and 356,324.86 is: 491,695.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,829.15 : 887,044.53 = 356,324.86 : x
  2. Step 2: Convert to fraction form
    642,829.15/887,044.53 = 356,324.86/x
  3. Step 3: Cross multiply
    642,829.15x = 887,044.53 × 356,324.86
  4. Step 4: Simplify right side
    642,829.15x = 316,076,017,966.02
  5. Step 5: Solve for x
    x = 316,076,017,966.02/642,829.15
  6. Step 6: Final answer
    x = 491,695.22

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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.