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Finding the Fourth Proportional to 565,862.52, 780,896.80 and 311,217.96

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Solution

The fourth proportional to 565,862.52, 780,896.80 and 311,217.96 is: 429,484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,862.52 : 780,896.80 = 311,217.96 : x
  2. Step 2: Convert to fraction form
    565,862.52/780,896.80 = 311,217.96/x
  3. Step 3: Cross multiply
    565,862.52x = 780,896.80 × 311,217.96
  4. Step 4: Simplify right side
    565,862.52x = 243,029,109,066.53
  5. Step 5: Solve for x
    x = 243,029,109,066.53/565,862.52
  6. Step 6: Final answer
    x = 429,484.37

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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.