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Finding the Fourth Proportional to 578,859.90, 867,964.77 and 396,696.30

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Solution

The fourth proportional to 578,859.90, 867,964.77 and 396,696.30 is: 594,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,859.90 : 867,964.77 = 396,696.30 : x
  2. Step 2: Convert to fraction form
    578,859.90/867,964.77 = 396,696.30/x
  3. Step 3: Cross multiply
    578,859.90x = 867,964.77 × 396,696.30
  4. Step 4: Simplify right side
    578,859.90x = 344,318,412,789.35
  5. Step 5: Solve for x
    x = 344,318,412,789.35/578,859.90
  6. Step 6: Final answer
    x = 594,821.67

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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.