Home / 371,976.40-513,574.48-285,781.76

Finding the Fourth Proportional to 371,976.40, 513,574.48 and 285,781.76

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Solution

The fourth proportional to 371,976.40, 513,574.48 and 285,781.76 is: 394,568.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,976.40 : 513,574.48 = 285,781.76 : x
  2. Step 2: Convert to fraction form
    371,976.40/513,574.48 = 285,781.76/x
  3. Step 3: Cross multiply
    371,976.40x = 513,574.48 × 285,781.76
  4. Step 4: Simplify right side
    371,976.40x = 146,770,218,785.49
  5. Step 5: Solve for x
    x = 146,770,218,785.49/371,976.40
  6. Step 6: Final answer
    x = 394,568.63

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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.