Home / 752,504.90-1,128,929.76-326,112.30

Finding the Fourth Proportional to 752,504.90, 1,128,929.76 and 326,112.30

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Solution

The fourth proportional to 752,504.90, 1,128,929.76 and 326,112.30 is: 489,243.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,504.90 : 1,128,929.76 = 326,112.30 : x
  2. Step 2: Convert to fraction form
    752,504.90/1,128,929.76 = 326,112.30/x
  3. Step 3: Cross multiply
    752,504.90x = 1,128,929.76 × 326,112.30
  4. Step 4: Simplify right side
    752,504.90x = 368,157,880,572.05
  5. Step 5: Solve for x
    x = 368,157,880,572.05/752,504.90
  6. Step 6: Final answer
    x = 489,243.17

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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.