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Finding the Fourth Proportional to 565,887.84, 780,900.96 and 311,222.56

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Solution

The fourth proportional to 565,887.84, 780,900.96 and 311,222.56 is: 429,473.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,887.84 : 780,900.96 = 311,222.56 : x
  2. Step 2: Convert to fraction form
    565,887.84/780,900.96 = 311,222.56/x
  3. Step 3: Cross multiply
    565,887.84x = 780,900.96 × 311,222.56
  4. Step 4: Simplify right side
    565,887.84x = 243,033,995,877.66
  5. Step 5: Solve for x
    x = 243,033,995,877.66/565,887.84
  6. Step 6: Final answer
    x = 429,473.79

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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.