Home / 681,305.60-1,021,958.40-326,136.80

Finding the Fourth Proportional to 681,305.60, 1,021,958.40 and 326,136.80

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Solution

The fourth proportional to 681,305.60, 1,021,958.40 and 326,136.80 is: 489,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,305.60 : 1,021,958.40 = 326,136.80 : x
  2. Step 2: Convert to fraction form
    681,305.60/1,021,958.40 = 326,136.80/x
  3. Step 3: Cross multiply
    681,305.60x = 1,021,958.40 × 326,136.80
  4. Step 4: Simplify right side
    681,305.60x = 333,298,242,309.12
  5. Step 5: Solve for x
    x = 333,298,242,309.12/681,305.60
  6. Step 6: Final answer
    x = 489,205.20

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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.