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Finding the Fourth Proportional to 428,694.55, 591,110.66 and 350,922.80

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Solution

The fourth proportional to 428,694.55, 591,110.66 and 350,922.80 is: 483,874.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,694.55 : 591,110.66 = 350,922.80 : x
  2. Step 2: Convert to fraction form
    428,694.55/591,110.66 = 350,922.80/x
  3. Step 3: Cross multiply
    428,694.55x = 591,110.66 × 350,922.80
  4. Step 4: Simplify right side
    428,694.55x = 207,434,207,917.05
  5. Step 5: Solve for x
    x = 207,434,207,917.05/428,694.55
  6. Step 6: Final answer
    x = 483,874.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.