Home / 874,187.20-1,310,560.80-394,446.40

Finding the Fourth Proportional to 874,187.20, 1,310,560.80 and 394,446.40

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Solution

The fourth proportional to 874,187.20, 1,310,560.80 and 394,446.40 is: 591,344.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,187.20 : 1,310,560.80 = 394,446.40 : x
  2. Step 2: Convert to fraction form
    874,187.20/1,310,560.80 = 394,446.40/x
  3. Step 3: Cross multiply
    874,187.20x = 1,310,560.80 × 394,446.40
  4. Step 4: Simplify right side
    874,187.20x = 516,945,989,541.12
  5. Step 5: Solve for x
    x = 516,945,989,541.12/874,187.20
  6. Step 6: Final answer
    x = 591,344.73

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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.