Home / 718,309.50-1,077,469.65-318,842.88

Finding the Fourth Proportional to 718,309.50, 1,077,469.65 and 318,842.88

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Solution

The fourth proportional to 718,309.50, 1,077,469.65 and 318,842.88 is: 478,266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,309.50 : 1,077,469.65 = 318,842.88 : x
  2. Step 2: Convert to fraction form
    718,309.50/1,077,469.65 = 318,842.88/x
  3. Step 3: Cross multiply
    718,309.50x = 1,077,469.65 × 318,842.88
  4. Step 4: Simplify right side
    718,309.50x = 343,543,526,318.59
  5. Step 5: Solve for x
    x = 343,543,526,318.59/718,309.50
  6. Step 6: Final answer
    x = 478,266.72

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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.