Home / 685,321.20-1,027,981.80-615,337.20

Finding the Fourth Proportional to 685,321.20, 1,027,981.80 and 615,337.20

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Solution

The fourth proportional to 685,321.20, 1,027,981.80 and 615,337.20 is: 923,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,321.20 : 1,027,981.80 = 615,337.20 : x
  2. Step 2: Convert to fraction form
    685,321.20/1,027,981.80 = 615,337.20/x
  3. Step 3: Cross multiply
    685,321.20x = 1,027,981.80 × 615,337.20
  4. Step 4: Simplify right side
    685,321.20x = 632,555,442,462.96
  5. Step 5: Solve for x
    x = 632,555,442,462.96/685,321.20
  6. Step 6: Final answer
    x = 923,005.80

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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.