Home / 1,218,796.56-1,681,918.47-674,920.64

Finding the Fourth Proportional to 1,218,796.56, 1,681,918.47 and 674,920.64

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Solution

The fourth proportional to 1,218,796.56, 1,681,918.47 and 674,920.64 is: 931,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,796.56 : 1,681,918.47 = 674,920.64 : x
  2. Step 2: Convert to fraction form
    1,218,796.56/1,681,918.47 = 674,920.64/x
  3. Step 3: Cross multiply
    1,218,796.56x = 1,681,918.47 × 674,920.64
  4. Step 4: Simplify right side
    1,218,796.56x = 1,135,161,481,790.63
  5. Step 5: Solve for x
    x = 1,135,161,481,790.63/1,218,796.56
  6. Step 6: Final answer
    x = 931,378.97

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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.