Home / 1,428,047.38-2,141,021.31-680,618.26

Finding the Fourth Proportional to 1,428,047.38, 2,141,021.31 and 680,618.26

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Solution

The fourth proportional to 1,428,047.38, 2,141,021.31 and 680,618.26 is: 1,020,427.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,047.38 : 2,141,021.31 = 680,618.26 : x
  2. Step 2: Convert to fraction form
    1,428,047.38/2,141,021.31 = 680,618.26/x
  3. Step 3: Cross multiply
    1,428,047.38x = 2,141,021.31 × 680,618.26
  4. Step 4: Simplify right side
    1,428,047.38x = 1,457,218,198,635.12
  5. Step 5: Solve for x
    x = 1,457,218,198,635.12/1,428,047.38
  6. Step 6: Final answer
    x = 1,020,427.07

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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.