Home / 642,829.02-887,044.38-356,324.72

Finding the Fourth Proportional to 642,829.02, 887,044.38 and 356,324.72

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Solution

The fourth proportional to 642,829.02, 887,044.38 and 356,324.72 is: 491,695.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,829.02 : 887,044.38 = 356,324.72 : x
  2. Step 2: Convert to fraction form
    642,829.02/887,044.38 = 356,324.72/x
  3. Step 3: Cross multiply
    642,829.02x = 887,044.38 × 356,324.72
  4. Step 4: Simplify right side
    642,829.02x = 316,075,840,331.07
  5. Step 5: Solve for x
    x = 316,075,840,331.07/642,829.02
  6. Step 6: Final answer
    x = 491,695.04

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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.