Home / 681,208.60-1,021,812.90-326,039.80

Finding the Fourth Proportional to 681,208.60, 1,021,812.90 and 326,039.80

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Solution

The fourth proportional to 681,208.60, 1,021,812.90 and 326,039.80 is: 489,059.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,208.60 : 1,021,812.90 = 326,039.80 : x
  2. Step 2: Convert to fraction form
    681,208.60/1,021,812.90 = 326,039.80/x
  3. Step 3: Cross multiply
    681,208.60x = 1,021,812.90 × 326,039.80
  4. Step 4: Simplify right side
    681,208.60x = 333,151,673,553.42
  5. Step 5: Solve for x
    x = 333,151,673,553.42/681,208.60
  6. Step 6: Final answer
    x = 489,059.70

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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.