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Finding the Fourth Proportional to 663,312.83, 994,872.05 and 326,263.01

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Solution

The fourth proportional to 663,312.83, 994,872.05 and 326,263.01 is: 489,346.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,312.83 : 994,872.05 = 326,263.01 : x
  2. Step 2: Convert to fraction form
    663,312.83/994,872.05 = 326,263.01/x
  3. Step 3: Cross multiply
    663,312.83x = 994,872.05 × 326,263.01
  4. Step 4: Simplify right side
    663,312.83x = 324,589,947,966.56
  5. Step 5: Solve for x
    x = 324,589,947,966.56/663,312.83
  6. Step 6: Final answer
    x = 489,346.71

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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.