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Finding the Fourth Proportional to 518,295.50, 775,687.65 and 318,742.46

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Solution

The fourth proportional to 518,295.50, 775,687.65 and 318,742.46 is: 477,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,295.50 : 775,687.65 = 318,742.46 : x
  2. Step 2: Convert to fraction form
    518,295.50/775,687.65 = 318,742.46/x
  3. Step 3: Cross multiply
    518,295.50x = 775,687.65 × 318,742.46
  4. Step 4: Simplify right side
    518,295.50x = 247,244,589,752.62
  5. Step 5: Solve for x
    x = 247,244,589,752.62/518,295.50
  6. Step 6: Final answer
    x = 477,034.03

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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.