Home / 1,818,412.82-2,508,487.86-1,387,945.64

Finding the Fourth Proportional to 1,818,412.82, 2,508,487.86 and 1,387,945.64

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Solution

The fourth proportional to 1,818,412.82, 2,508,487.86 and 1,387,945.64 is: 1,914,661.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818,412.82 : 2,508,487.86 = 1,387,945.64 : x
  2. Step 2: Convert to fraction form
    1,818,412.82/2,508,487.86 = 1,387,945.64/x
  3. Step 3: Cross multiply
    1,818,412.82x = 2,508,487.86 × 1,387,945.64
  4. Step 4: Simplify right side
    1,818,412.82x = 3,481,644,788,279.93
  5. Step 5: Solve for x
    x = 3,481,644,788,279.93/1,818,412.82
  6. Step 6: Final answer
    x = 1,914,661.37

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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.