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Finding the Fourth Proportional to 479,713.59, 661,974.12 and 275,715.90

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Solution

The fourth proportional to 479,713.59, 661,974.12 and 275,715.90 is: 380,470.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,713.59 : 661,974.12 = 275,715.90 : x
  2. Step 2: Convert to fraction form
    479,713.59/661,974.12 = 275,715.90/x
  3. Step 3: Cross multiply
    479,713.59x = 661,974.12 × 275,715.90
  4. Step 4: Simplify right side
    479,713.59x = 182,516,790,272.51
  5. Step 5: Solve for x
    x = 182,516,790,272.51/479,713.59
  6. Step 6: Final answer
    x = 380,470.33

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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.