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Finding the Fourth Proportional to 565,490.50, 780,378.51 and 323,776.78

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Solution

The fourth proportional to 565,490.50, 780,378.51 and 323,776.78 is: 446,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,490.50 : 780,378.51 = 323,776.78 : x
  2. Step 2: Convert to fraction form
    565,490.50/780,378.51 = 323,776.78/x
  3. Step 3: Cross multiply
    565,490.50x = 780,378.51 × 323,776.78
  4. Step 4: Simplify right side
    565,490.50x = 252,668,441,149.00
  5. Step 5: Solve for x
    x = 252,668,441,149.00/565,490.50
  6. Step 6: Final answer
    x = 446,812.88

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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.