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Finding the Fourth Proportional to 569,453.87, 785,849.91 and 311,331.41

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Solution

The fourth proportional to 569,453.87, 785,849.91 and 311,331.41 is: 429,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,453.87 : 785,849.91 = 311,331.41 : x
  2. Step 2: Convert to fraction form
    569,453.87/785,849.91 = 311,331.41/x
  3. Step 3: Cross multiply
    569,453.87x = 785,849.91 × 311,331.41
  4. Step 4: Simplify right side
    569,453.87x = 244,659,760,528.67
  5. Step 5: Solve for x
    x = 244,659,760,528.67/569,453.87
  6. Step 6: Final answer
    x = 429,639.30

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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.