Home / 752,515.72-1,128,945.94-326,123.15

Finding the Fourth Proportional to 752,515.72, 1,128,945.94 and 326,123.15

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Solution

The fourth proportional to 752,515.72, 1,128,945.94 and 326,123.15 is: 489,259.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,515.72 : 1,128,945.94 = 326,123.15 : x
  2. Step 2: Convert to fraction form
    752,515.72/1,128,945.94 = 326,123.15/x
  3. Step 3: Cross multiply
    752,515.72x = 1,128,945.94 × 326,123.15
  4. Step 4: Simplify right side
    752,515.72x = 368,175,399,672.47
  5. Step 5: Solve for x
    x = 368,175,399,672.47/752,515.72
  6. Step 6: Final answer
    x = 489,259.41

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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.