Home / 642,044.10-885,989.28-351,656.93

Finding the Fourth Proportional to 642,044.10, 885,989.28 and 351,656.93

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Solution

The fourth proportional to 642,044.10, 885,989.28 and 351,656.93 is: 485,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,044.10 : 885,989.28 = 351,656.93 : x
  2. Step 2: Convert to fraction form
    642,044.10/885,989.28 = 351,656.93/x
  3. Step 3: Cross multiply
    642,044.10x = 885,989.28 × 351,656.93
  4. Step 4: Simplify right side
    642,044.10x = 311,564,268,898.55
  5. Step 5: Solve for x
    x = 311,564,268,898.55/642,044.10
  6. Step 6: Final answer
    x = 485,269.27

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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.