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Finding the Fourth Proportional to 941,131, 1,298,760.78 and 517,195

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Solution

The fourth proportional to 941,131, 1,298,760.78 and 517,195 is: 713,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    941,131 : 1,298,760.78 = 517,195 : x
  2. Step 2: Convert to fraction form
    941,131/1,298,760.78 = 517,195/x
  3. Step 3: Cross multiply
    941,131x = 1,298,760.78 × 517,195
  4. Step 4: Simplify right side
    941,131x = 671,712,581,612.10
  5. Step 5: Solve for x
    x = 671,712,581,612.10/941,131
  6. Step 6: Final answer
    x = 713,729.10

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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.