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Finding the Fourth Proportional to 578,766.40, 868,034.40 and 279,246.40

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Solution

The fourth proportional to 578,766.40, 868,034.40 and 279,246.40 is: 418,814.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,766.40 : 868,034.40 = 279,246.40 : x
  2. Step 2: Convert to fraction form
    578,766.40/868,034.40 = 279,246.40/x
  3. Step 3: Cross multiply
    578,766.40x = 868,034.40 × 279,246.40
  4. Step 4: Simplify right side
    578,766.40x = 242,395,481,276.16
  5. Step 5: Solve for x
    x = 242,395,481,276.16/578,766.40
  6. Step 6: Final answer
    x = 418,814.02

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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.