Home / 1,986,308.19-2,979,758.75-921,457.89

Finding the Fourth Proportional to 1,986,308.19, 2,979,758.75 and 921,457.89

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Solution

The fourth proportional to 1,986,308.19, 2,979,758.75 and 921,457.89 is: 1,382,324.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,308.19 : 2,979,758.75 = 921,457.89 : x
  2. Step 2: Convert to fraction form
    1,986,308.19/2,979,758.75 = 921,457.89/x
  3. Step 3: Cross multiply
    1,986,308.19x = 2,979,758.75 × 921,457.89
  4. Step 4: Simplify right side
    1,986,308.19x = 2,745,722,205,876.75
  5. Step 5: Solve for x
    x = 2,745,722,205,876.75/1,986,308.19
  6. Step 6: Final answer
    x = 1,382,324.36

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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.