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Finding the Fourth Proportional to 527,219.64, 789,279.12 and 326,896.92

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Solution

The fourth proportional to 527,219.64, 789,279.12 and 326,896.92 is: 489,384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,219.64 : 789,279.12 = 326,896.92 : x
  2. Step 2: Convert to fraction form
    527,219.64/789,279.12 = 326,896.92/x
  3. Step 3: Cross multiply
    527,219.64x = 789,279.12 × 326,896.92
  4. Step 4: Simplify right side
    527,219.64x = 258,012,913,348.31
  5. Step 5: Solve for x
    x = 258,012,913,348.31/527,219.64
  6. Step 6: Final answer
    x = 489,384.11

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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.