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Finding the Fourth Proportional to 565,853.68, 780,892.88 and 311,211.56

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Solution

The fourth proportional to 565,853.68, 780,892.88 and 311,211.56 is: 429,480.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,853.68 : 780,892.88 = 311,211.56 : x
  2. Step 2: Convert to fraction form
    565,853.68/780,892.88 = 311,211.56/x
  3. Step 3: Cross multiply
    565,853.68x = 780,892.88 × 311,211.56
  4. Step 4: Simplify right side
    565,853.68x = 243,022,891,377.69
  5. Step 5: Solve for x
    x = 243,022,891,377.69/565,853.68
  6. Step 6: Final answer
    x = 429,480.09

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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.