Home / 681,859.56-940,884.04-391,455.12

Finding the Fourth Proportional to 681,859.56, 940,884.04 and 391,455.12

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Solution

The fourth proportional to 681,859.56, 940,884.04 and 391,455.12 is: 540,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,859.56 : 940,884.04 = 391,455.12 : x
  2. Step 2: Convert to fraction form
    681,859.56/940,884.04 = 391,455.12/x
  3. Step 3: Cross multiply
    681,859.56x = 940,884.04 × 391,455.12
  4. Step 4: Simplify right side
    681,859.56x = 368,313,874,784.29
  5. Step 5: Solve for x
    x = 368,313,874,784.29/681,859.56
  6. Step 6: Final answer
    x = 540,160.90

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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.