Home / 874,141.20-1,310,491.80-394,400.40

Finding the Fourth Proportional to 874,141.20, 1,310,491.80 and 394,400.40

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Solution

The fourth proportional to 874,141.20, 1,310,491.80 and 394,400.40 is: 591,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,141.20 : 1,310,491.80 = 394,400.40 : x
  2. Step 2: Convert to fraction form
    874,141.20/1,310,491.80 = 394,400.40/x
  3. Step 3: Cross multiply
    874,141.20x = 1,310,491.80 × 394,400.40
  4. Step 4: Simplify right side
    874,141.20x = 516,858,490,116.72
  5. Step 5: Solve for x
    x = 516,858,490,116.72/874,141.20
  6. Step 6: Final answer
    x = 591,275.75

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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.