Home / 1,438,805.46-1,986,142.77-981,429.78

Finding the Fourth Proportional to 1,438,805.46, 1,986,142.77 and 981,429.78

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Solution

The fourth proportional to 1,438,805.46, 1,986,142.77 and 981,429.78 is: 1,354,776.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,805.46 : 1,986,142.77 = 981,429.78 : x
  2. Step 2: Convert to fraction form
    1,438,805.46/1,986,142.77 = 981,429.78/x
  3. Step 3: Cross multiply
    1,438,805.46x = 1,986,142.77 × 981,429.78
  4. Step 4: Simplify right side
    1,438,805.46x = 1,949,259,661,809.69
  5. Step 5: Solve for x
    x = 1,949,259,661,809.69/1,438,805.46
  6. Step 6: Final answer
    x = 1,354,776.39

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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.