Home / 1,986,371.37-2,979,270.27-638,358.03

Finding the Fourth Proportional to 1,986,371.37, 2,979,270.27 and 638,358.03

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Solution

The fourth proportional to 1,986,371.37, 2,979,270.27 and 638,358.03 is: 957,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,371.37 : 2,979,270.27 = 638,358.03 : x
  2. Step 2: Convert to fraction form
    1,986,371.37/2,979,270.27 = 638,358.03/x
  3. Step 3: Cross multiply
    1,986,371.37x = 2,979,270.27 × 638,358.03
  4. Step 4: Simplify right side
    1,986,371.37x = 1,901,841,100,394.77
  5. Step 5: Solve for x
    x = 1,901,841,100,394.77/1,986,371.37
  6. Step 6: Final answer
    x = 957,444.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.