Home / 679,177.60-1,018,766.40-324,008.80

Finding the Fourth Proportional to 679,177.60, 1,018,766.40 and 324,008.80

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Solution

The fourth proportional to 679,177.60, 1,018,766.40 and 324,008.80 is: 486,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,177.60 : 1,018,766.40 = 324,008.80 : x
  2. Step 2: Convert to fraction form
    679,177.60/1,018,766.40 = 324,008.80/x
  3. Step 3: Cross multiply
    679,177.60x = 1,018,766.40 × 324,008.80
  4. Step 4: Simplify right side
    679,177.60x = 330,089,278,744.32
  5. Step 5: Solve for x
    x = 330,089,278,744.32/679,177.60
  6. Step 6: Final answer
    x = 486,013.20

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Double scale
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Similar ratio
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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.