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Finding the Fourth Proportional to 578,045.80, 866,939.10 and 379,757.80

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Solution

The fourth proportional to 578,045.80, 866,939.10 and 379,757.80 is: 569,551.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,045.80 : 866,939.10 = 379,757.80 : x
  2. Step 2: Convert to fraction form
    578,045.80/866,939.10 = 379,757.80/x
  3. Step 3: Cross multiply
    578,045.80x = 866,939.10 × 379,757.80
  4. Step 4: Simplify right side
    578,045.80x = 329,226,885,349.98
  5. Step 5: Solve for x
    x = 329,226,885,349.98/578,045.80
  6. Step 6: Final answer
    x = 569,551.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.