Home / 439,812.60-658,844.10-408,319.80

Finding the Fourth Proportional to 439,812.60, 658,844.10 and 408,319.80

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Solution

The fourth proportional to 439,812.60, 658,844.10 and 408,319.80 is: 611,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,812.60 : 658,844.10 = 408,319.80 : x
  2. Step 2: Convert to fraction form
    439,812.60/658,844.10 = 408,319.80/x
  3. Step 3: Cross multiply
    439,812.60x = 658,844.10 × 408,319.80
  4. Step 4: Simplify right side
    439,812.60x = 269,019,091,143.18
  5. Step 5: Solve for x
    x = 269,019,091,143.18/439,812.60
  6. Step 6: Final answer
    x = 611,667.54

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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.