Home / 861,792.78-1,292,133.92-412,502.80

Finding the Fourth Proportional to 861,792.78, 1,292,133.92 and 412,502.80

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Solution

The fourth proportional to 861,792.78, 1,292,133.92 and 412,502.80 is: 618,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,792.78 : 1,292,133.92 = 412,502.80 : x
  2. Step 2: Convert to fraction form
    861,792.78/1,292,133.92 = 412,502.80/x
  3. Step 3: Cross multiply
    861,792.78x = 1,292,133.92 × 412,502.80
  4. Step 4: Simplify right side
    861,792.78x = 533,008,859,974.98
  5. Step 5: Solve for x
    x = 533,008,859,974.98/861,792.78
  6. Step 6: Final answer
    x = 618,488.43

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1.5x scale

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.