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Finding the Fourth Proportional to 578,858.40, 867,962.52 and 396,694.80

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Solution

The fourth proportional to 578,858.40, 867,962.52 and 396,694.80 is: 594,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,858.40 : 867,962.52 = 396,694.80 : x
  2. Step 2: Convert to fraction form
    578,858.40/867,962.52 = 396,694.80/x
  3. Step 3: Cross multiply
    578,858.40x = 867,962.52 × 396,694.80
  4. Step 4: Simplify right side
    578,858.40x = 344,316,218,278.90
  5. Step 5: Solve for x
    x = 344,316,218,278.90/578,858.40
  6. Step 6: Final answer
    x = 594,819.42

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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.