Home / 679,469.88-1,019,151.81-394,978.96

Finding the Fourth Proportional to 679,469.88, 1,019,151.81 and 394,978.96

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Solution

The fourth proportional to 679,469.88, 1,019,151.81 and 394,978.96 is: 592,437.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,469.88 : 1,019,151.81 = 394,978.96 : x
  2. Step 2: Convert to fraction form
    679,469.88/1,019,151.81 = 394,978.96/x
  3. Step 3: Cross multiply
    679,469.88x = 1,019,151.81 × 394,978.96
  4. Step 4: Simplify right side
    679,469.88x = 402,543,522,568.90
  5. Step 5: Solve for x
    x = 402,543,522,568.90/679,469.88
  6. Step 6: Final answer
    x = 592,437.63

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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.