Home / 752,505.39-1,128,930.51-326,112.80

Finding the Fourth Proportional to 752,505.39, 1,128,930.51 and 326,112.80

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Solution

The fourth proportional to 752,505.39, 1,128,930.51 and 326,112.80 is: 489,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,505.39 : 1,128,930.51 = 326,112.80 : x
  2. Step 2: Convert to fraction form
    752,505.39/1,128,930.51 = 326,112.80/x
  3. Step 3: Cross multiply
    752,505.39x = 1,128,930.51 × 326,112.80
  4. Step 4: Simplify right side
    752,505.39x = 368,158,689,621.53
  5. Step 5: Solve for x
    x = 368,158,689,621.53/752,505.39
  6. Step 6: Final answer
    x = 489,243.92

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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.