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Finding the Fourth Proportional to 578,115.80, 867,044.10 and 379,827.80

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Solution

The fourth proportional to 578,115.80, 867,044.10 and 379,827.80 is: 569,656.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,115.80 : 867,044.10 = 379,827.80 : x
  2. Step 2: Convert to fraction form
    578,115.80/867,044.10 = 379,827.80/x
  3. Step 3: Cross multiply
    578,115.80x = 867,044.10 × 379,827.80
  4. Step 4: Simplify right side
    578,115.80x = 329,327,453,005.98
  5. Step 5: Solve for x
    x = 329,327,453,005.98/578,115.80
  6. Step 6: Final answer
    x = 569,656.55

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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.