Home / 791,378.32-1,188,253.32-685,090.12

Finding the Fourth Proportional to 791,378.32, 1,188,253.32 and 685,090.12

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Solution

The fourth proportional to 791,378.32, 1,188,253.32 and 685,090.12 is: 1,028,661.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,378.32 : 1,188,253.32 = 685,090.12 : x
  2. Step 2: Convert to fraction form
    791,378.32/1,188,253.32 = 685,090.12/x
  3. Step 3: Cross multiply
    791,378.32x = 1,188,253.32 × 685,090.12
  4. Step 4: Simplify right side
    791,378.32x = 814,060,609,589.20
  5. Step 5: Solve for x
    x = 814,060,609,589.20/791,378.32
  6. Step 6: Final answer
    x = 1,028,661.75

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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.