Home / 1,218,383.52-1,681,305.33-666,993.53

Finding the Fourth Proportional to 1,218,383.52, 1,681,305.33 and 666,993.53

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Solution

The fourth proportional to 1,218,383.52, 1,681,305.33 and 666,993.53 is: 920,416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,383.52 : 1,681,305.33 = 666,993.53 : x
  2. Step 2: Convert to fraction form
    1,218,383.52/1,681,305.33 = 666,993.53/x
  3. Step 3: Cross multiply
    1,218,383.52x = 1,681,305.33 × 666,993.53
  4. Step 4: Simplify right side
    1,218,383.52x = 1,121,419,768,657.99
  5. Step 5: Solve for x
    x = 1,121,419,768,657.99/1,218,383.52
  6. Step 6: Final answer
    x = 920,416.07

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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.