Home / 861,407.79-1,292,012.82-230,370.81

Finding the Fourth Proportional to 861,407.79, 1,292,012.82 and 230,370.81

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Solution

The fourth proportional to 861,407.79, 1,292,012.82 and 230,370.81 is: 345,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,407.79 : 1,292,012.82 = 230,370.81 : x
  2. Step 2: Convert to fraction form
    861,407.79/1,292,012.82 = 230,370.81/x
  3. Step 3: Cross multiply
    861,407.79x = 1,292,012.82 × 230,370.81
  4. Step 4: Simplify right side
    861,407.79x = 297,642,039,873.78
  5. Step 5: Solve for x
    x = 297,642,039,873.78/861,407.79
  6. Step 6: Final answer
    x = 345,529.78

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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.