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Finding the Fourth Proportional to 655,732.48, 904,978.56 and 401,252.80

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Solution

The fourth proportional to 655,732.48, 904,978.56 and 401,252.80 is: 553,770.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,732.48 : 904,978.56 = 401,252.80 : x
  2. Step 2: Convert to fraction form
    655,732.48/904,978.56 = 401,252.80/x
  3. Step 3: Cross multiply
    655,732.48x = 904,978.56 × 401,252.80
  4. Step 4: Simplify right side
    655,732.48x = 363,125,181,139.97
  5. Step 5: Solve for x
    x = 363,125,181,139.97/655,732.48
  6. Step 6: Final answer
    x = 553,770.31

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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.