Home / 839,121.93-1,259,076.56-418,430.61

Finding the Fourth Proportional to 839,121.93, 1,259,076.56 and 418,430.61

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Solution

The fourth proportional to 839,121.93, 1,259,076.56 and 418,430.61 is: 627,842.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,121.93 : 1,259,076.56 = 418,430.61 : x
  2. Step 2: Convert to fraction form
    839,121.93/1,259,076.56 = 418,430.61/x
  3. Step 3: Cross multiply
    839,121.93x = 1,259,076.56 × 418,430.61
  4. Step 4: Simplify right side
    839,121.93x = 526,836,170,945.35
  5. Step 5: Solve for x
    x = 526,836,170,945.35/839,121.93
  6. Step 6: Final answer
    x = 627,842.21

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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.