Home / 681,557.09-940,552.43-391,145.49

Finding the Fourth Proportional to 681,557.09, 940,552.43 and 391,145.49

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Solution

The fourth proportional to 681,557.09, 940,552.43 and 391,145.49 is: 539,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,557.09 : 940,552.43 = 391,145.49 : x
  2. Step 2: Convert to fraction form
    681,557.09/940,552.43 = 391,145.49/x
  3. Step 3: Cross multiply
    681,557.09x = 940,552.43 × 391,145.49
  4. Step 4: Simplify right side
    681,557.09x = 367,892,839,147.31
  5. Step 5: Solve for x
    x = 367,892,839,147.31/681,557.09
  6. Step 6: Final answer
    x = 539,782.87

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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.