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Finding the Fourth Proportional to 441,765.60, 663,166.80 and 438,655.20

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Solution

The fourth proportional to 441,765.60, 663,166.80 and 438,655.20 is: 658,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,765.60 : 663,166.80 = 438,655.20 : x
  2. Step 2: Convert to fraction form
    441,765.60/663,166.80 = 438,655.20/x
  3. Step 3: Cross multiply
    441,765.60x = 663,166.80 × 438,655.20
  4. Step 4: Simplify right side
    441,765.60x = 290,901,565,287.36
  5. Step 5: Solve for x
    x = 290,901,565,287.36/441,765.60
  6. Step 6: Final answer
    x = 658,497.55

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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.