Home / 861,139.91-1,291,708.64-292,580.06

Finding the Fourth Proportional to 861,139.91, 1,291,708.64 and 292,580.06

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Solution

The fourth proportional to 861,139.91, 1,291,708.64 and 292,580.06 is: 438,869.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,139.91 : 1,291,708.64 = 292,580.06 : x
  2. Step 2: Convert to fraction form
    861,139.91/1,291,708.64 = 292,580.06/x
  3. Step 3: Cross multiply
    861,139.91x = 1,291,708.64 × 292,580.06
  4. Step 4: Simplify right side
    861,139.91x = 377,928,183,472.28
  5. Step 5: Solve for x
    x = 377,928,183,472.28/861,139.91
  6. Step 6: Final answer
    x = 438,869.67

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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.