Home / 681,327.08-940,252.69-390,991.76

Finding the Fourth Proportional to 681,327.08, 940,252.69 and 390,991.76

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Solution

The fourth proportional to 681,327.08, 940,252.69 and 390,991.76 is: 539,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,327.08 : 940,252.69 = 390,991.76 : x
  2. Step 2: Convert to fraction form
    681,327.08/940,252.69 = 390,991.76/x
  3. Step 3: Cross multiply
    681,327.08x = 940,252.69 × 390,991.76
  4. Step 4: Simplify right side
    681,327.08x = 367,631,054,107.83
  5. Step 5: Solve for x
    x = 367,631,054,107.83/681,327.08
  6. Step 6: Final answer
    x = 539,580.86

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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.