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Finding the Fourth Proportional to 565,488.50, 780,375.75 and 323,774.78

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Solution

The fourth proportional to 565,488.50, 780,375.75 and 323,774.78 is: 446,810.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,488.50 : 780,375.75 = 323,774.78 : x
  2. Step 2: Convert to fraction form
    565,488.50/780,375.75 = 323,774.78/x
  3. Step 3: Cross multiply
    565,488.50x = 780,375.75 × 323,774.78
  4. Step 4: Simplify right side
    565,488.50x = 252,665,986,773.59
  5. Step 5: Solve for x
    x = 252,665,986,773.59/565,488.50
  6. Step 6: Final answer
    x = 446,810.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.