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Finding the Fourth Proportional to 755,348.65, 1,042,348.56 and 411,185.11

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Solution

The fourth proportional to 755,348.65, 1,042,348.56 and 411,185.11 is: 567,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,348.65 : 1,042,348.56 = 411,185.11 : x
  2. Step 2: Convert to fraction form
    755,348.65/1,042,348.56 = 411,185.11/x
  3. Step 3: Cross multiply
    755,348.65x = 1,042,348.56 × 411,185.11
  4. Step 4: Simplify right side
    755,348.65x = 428,598,207,301.94
  5. Step 5: Solve for x
    x = 428,598,207,301.94/755,348.65
  6. Step 6: Final answer
    x = 567,417.72

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Double scale
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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.