Home / 1,428,471.30-1,970,982.46-824,509.38

Finding the Fourth Proportional to 1,428,471.30, 1,970,982.46 and 824,509.38

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Solution

The fourth proportional to 1,428,471.30, 1,970,982.46 and 824,509.38 is: 1,137,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,471.30 : 1,970,982.46 = 824,509.38 : x
  2. Step 2: Convert to fraction form
    1,428,471.30/1,970,982.46 = 824,509.38/x
  3. Step 3: Cross multiply
    1,428,471.30x = 1,970,982.46 × 824,509.38
  4. Step 4: Simplify right side
    1,428,471.30x = 1,625,093,514,169.29
  5. Step 5: Solve for x
    x = 1,625,093,514,169.29/1,428,471.30
  6. Step 6: Final answer
    x = 1,137,645.20

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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.