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Finding the Fourth Proportional to 551,862.12, 761,398.58 and 322,253.78

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Solution

The fourth proportional to 551,862.12, 761,398.58 and 322,253.78 is: 444,610.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,862.12 : 761,398.58 = 322,253.78 : x
  2. Step 2: Convert to fraction form
    551,862.12/761,398.58 = 322,253.78/x
  3. Step 3: Cross multiply
    551,862.12x = 761,398.58 × 322,253.78
  4. Step 4: Simplify right side
    551,862.12x = 245,363,567,928.62
  5. Step 5: Solve for x
    x = 245,363,567,928.62/551,862.12
  6. Step 6: Final answer
    x = 444,610.27

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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.