Home / 725,407.41-1,088,951.81-389,104.86

Finding the Fourth Proportional to 725,407.41, 1,088,951.81 and 389,104.86

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Solution

The fourth proportional to 725,407.41, 1,088,951.81 and 389,104.86 is: 584,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,407.41 : 1,088,951.81 = 389,104.86 : x
  2. Step 2: Convert to fraction form
    725,407.41/1,088,951.81 = 389,104.86/x
  3. Step 3: Cross multiply
    725,407.41x = 1,088,951.81 × 389,104.86
  4. Step 4: Simplify right side
    725,407.41x = 423,716,439,631.27
  5. Step 5: Solve for x
    x = 423,716,439,631.27/725,407.41
  6. Step 6: Final answer
    x = 584,108.23

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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.