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Finding the Fourth Proportional to 527,663.60, 792,078.60 and 328,209.20

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Solution

The fourth proportional to 527,663.60, 792,078.60 and 328,209.20 is: 492,676.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,663.60 : 792,078.60 = 328,209.20 : x
  2. Step 2: Convert to fraction form
    527,663.60/792,078.60 = 328,209.20/x
  3. Step 3: Cross multiply
    527,663.60x = 792,078.60 × 328,209.20
  4. Step 4: Simplify right side
    527,663.60x = 259,967,483,643.12
  5. Step 5: Solve for x
    x = 259,967,483,643.12/527,663.60
  6. Step 6: Final answer
    x = 492,676.55

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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.