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Finding the Fourth Proportional to 861,552, 1,292,537.28 and 270,576

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Solution

The fourth proportional to 861,552, 1,292,537.28 and 270,576 is: 405,929.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,552 : 1,292,537.28 = 270,576 : x
  2. Step 2: Convert to fraction form
    861,552/1,292,537.28 = 270,576/x
  3. Step 3: Cross multiply
    861,552x = 1,292,537.28 × 270,576
  4. Step 4: Simplify right side
    861,552x = 349,729,567,073.28
  5. Step 5: Solve for x
    x = 349,729,567,073.28/861,552
  6. Step 6: Final answer
    x = 405,929.73

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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.