Home / 1,428,305.81-2,143,391.83-680,410.13

Finding the Fourth Proportional to 1,428,305.81, 2,143,391.83 and 680,410.13

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Solution

The fourth proportional to 1,428,305.81, 2,143,391.83 and 680,410.13 is: 1,021,059.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,305.81 : 2,143,391.83 = 680,410.13 : x
  2. Step 2: Convert to fraction form
    1,428,305.81/2,143,391.83 = 680,410.13/x
  3. Step 3: Cross multiply
    1,428,305.81x = 2,143,391.83 × 680,410.13
  4. Step 4: Simplify right side
    1,428,305.81x = 1,458,385,501,273.25
  5. Step 5: Solve for x
    x = 1,458,385,501,273.25/1,428,305.81
  6. Step 6: Final answer
    x = 1,021,059.70

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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.