Home / 1,128,768.90-1,693,411.92-489,180.02

Finding the Fourth Proportional to 1,128,768.90, 1,693,411.92 and 489,180.02

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Solution

The fourth proportional to 1,128,768.90, 1,693,411.92 and 489,180.02 is: 733,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,768.90 : 1,693,411.92 = 489,180.02 : x
  2. Step 2: Convert to fraction form
    1,128,768.90/1,693,411.92 = 489,180.02/x
  3. Step 3: Cross multiply
    1,128,768.90x = 1,693,411.92 × 489,180.02
  4. Step 4: Simplify right side
    1,128,768.90x = 828,383,268,426.78
  5. Step 5: Solve for x
    x = 828,383,268,426.78/1,128,768.90
  6. Step 6: Final answer
    x = 733,882.08

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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.