Home / 654,540.75-903,277.17-428,186.25

Finding the Fourth Proportional to 654,540.75, 903,277.17 and 428,186.25

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Solution

The fourth proportional to 654,540.75, 903,277.17 and 428,186.25 is: 590,904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,540.75 : 903,277.17 = 428,186.25 : x
  2. Step 2: Convert to fraction form
    654,540.75/903,277.17 = 428,186.25/x
  3. Step 3: Cross multiply
    654,540.75x = 903,277.17 × 428,186.25
  4. Step 4: Simplify right side
    654,540.75x = 386,770,864,132.91
  5. Step 5: Solve for x
    x = 386,770,864,132.91/654,540.75
  6. Step 6: Final answer
    x = 590,904.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.