Home / 1,687,988.38-2,329,423.79-913,619.09

Finding the Fourth Proportional to 1,687,988.38, 2,329,423.79 and 913,619.09

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Solution

The fourth proportional to 1,687,988.38, 2,329,423.79 and 913,619.09 is: 1,260,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,988.38 : 2,329,423.79 = 913,619.09 : x
  2. Step 2: Convert to fraction form
    1,687,988.38/2,329,423.79 = 913,619.09/x
  3. Step 3: Cross multiply
    1,687,988.38x = 2,329,423.79 × 913,619.09
  4. Step 4: Simplify right side
    1,687,988.38x = 2,128,206,027,028.94
  5. Step 5: Solve for x
    x = 2,128,206,027,028.94/1,687,988.38
  6. Step 6: Final answer
    x = 1,260,794.24

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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.