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Finding the Fourth Proportional to 578,290.88, 867,732.78 and 279,026.66

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Solution

The fourth proportional to 578,290.88, 867,732.78 and 279,026.66 is: 418,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,290.88 : 867,732.78 = 279,026.66 : x
  2. Step 2: Convert to fraction form
    578,290.88/867,732.78 = 279,026.66/x
  3. Step 3: Cross multiply
    578,290.88x = 867,732.78 × 279,026.66
  4. Step 4: Simplify right side
    578,290.88x = 242,120,579,375.92
  5. Step 5: Solve for x
    x = 242,120,579,375.92/578,290.88
  6. Step 6: Final answer
    x = 418,683.03

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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.