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Finding the Fourth Proportional to 621,878.59, 932,817.89 and 343,167.31

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Solution

The fourth proportional to 621,878.59, 932,817.89 and 343,167.31 is: 514,750.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,878.59 : 932,817.89 = 343,167.31 : x
  2. Step 2: Convert to fraction form
    621,878.59/932,817.89 = 343,167.31/x
  3. Step 3: Cross multiply
    621,878.59x = 932,817.89 × 343,167.31
  4. Step 4: Simplify right side
    621,878.59x = 320,112,606,031.18
  5. Step 5: Solve for x
    x = 320,112,606,031.18/621,878.59
  6. Step 6: Final answer
    x = 514,750.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.