Home / 868,991.28-1,199,257.29-487,042.71

Finding the Fourth Proportional to 868,991.28, 1,199,257.29 and 487,042.71

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Solution

The fourth proportional to 868,991.28, 1,199,257.29 and 487,042.71 is: 672,146.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,991.28 : 1,199,257.29 = 487,042.71 : x
  2. Step 2: Convert to fraction form
    868,991.28/1,199,257.29 = 487,042.71/x
  3. Step 3: Cross multiply
    868,991.28x = 1,199,257.29 × 487,042.71
  4. Step 4: Simplify right side
    868,991.28x = 584,089,520,508.86
  5. Step 5: Solve for x
    x = 584,089,520,508.86/868,991.28
  6. Step 6: Final answer
    x = 672,146.58

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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.