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Finding the Fourth Proportional to 587,809.20, 881,963.40 and 321,258.28

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Solution

The fourth proportional to 587,809.20, 881,963.40 and 321,258.28 is: 482,023.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,809.20 : 881,963.40 = 321,258.28 : x
  2. Step 2: Convert to fraction form
    587,809.20/881,963.40 = 321,258.28/x
  3. Step 3: Cross multiply
    587,809.20x = 881,963.40 × 321,258.28
  4. Step 4: Simplify right side
    587,809.20x = 283,338,044,906.95
  5. Step 5: Solve for x
    x = 283,338,044,906.95/587,809.20
  6. Step 6: Final answer
    x = 482,023.84

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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.