Home / 872,516.09-1,204,144.91-485,404.43

Finding the Fourth Proportional to 872,516.09, 1,204,144.91 and 485,404.43

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Solution

The fourth proportional to 872,516.09, 1,204,144.91 and 485,404.43 is: 669,898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,516.09 : 1,204,144.91 = 485,404.43 : x
  2. Step 2: Convert to fraction form
    872,516.09/1,204,144.91 = 485,404.43/x
  3. Step 3: Cross multiply
    872,516.09x = 1,204,144.91 × 485,404.43
  4. Step 4: Simplify right side
    872,516.09x = 584,497,268,868.74
  5. Step 5: Solve for x
    x = 584,497,268,868.74/872,516.09
  6. Step 6: Final answer
    x = 669,898.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.