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Finding the Fourth Proportional to 675,940, 932,798.04 and 421,291

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Solution

The fourth proportional to 675,940, 932,798.04 and 421,291 is: 581,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,940 : 932,798.04 = 421,291 : x
  2. Step 2: Convert to fraction form
    675,940/932,798.04 = 421,291/x
  3. Step 3: Cross multiply
    675,940x = 932,798.04 × 421,291
  4. Step 4: Simplify right side
    675,940x = 392,979,419,069.64
  5. Step 5: Solve for x
    x = 392,979,419,069.64/675,940
  6. Step 6: Final answer
    x = 581,382.10

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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.