Home / 578,520.16-868,339.97-279,211.47

Finding the Fourth Proportional to 578,520.16, 868,339.97 and 279,211.47

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Solution

The fourth proportional to 578,520.16, 868,339.97 and 279,211.47 is: 419,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,520.16 : 868,339.97 = 279,211.47 : x
  2. Step 2: Convert to fraction form
    578,520.16/868,339.97 = 279,211.47/x
  3. Step 3: Cross multiply
    578,520.16x = 868,339.97 × 279,211.47
  4. Step 4: Simplify right side
    578,520.16x = 242,450,479,483.46
  5. Step 5: Solve for x
    x = 242,450,479,483.46/578,520.16
  6. Step 6: Final answer
    x = 419,087.35

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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.