Home / 439,321.60-658,982.40-407,828.80

Finding the Fourth Proportional to 439,321.60, 658,982.40 and 407,828.80

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Solution

The fourth proportional to 439,321.60, 658,982.40 and 407,828.80 is: 611,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,321.60 : 658,982.40 = 407,828.80 : x
  2. Step 2: Convert to fraction form
    439,321.60/658,982.40 = 407,828.80/x
  3. Step 3: Cross multiply
    439,321.60x = 658,982.40 × 407,828.80
  4. Step 4: Simplify right side
    439,321.60x = 268,752,001,413.12
  5. Step 5: Solve for x
    x = 268,752,001,413.12/439,321.60
  6. Step 6: Final answer
    x = 611,743.20

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1.5x scale

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.