Home / 1,538,693.70-2,308,040.55-685,763.70

Finding the Fourth Proportional to 1,538,693.70, 2,308,040.55 and 685,763.70

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Solution

The fourth proportional to 1,538,693.70, 2,308,040.55 and 685,763.70 is: 1,028,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,693.70 : 2,308,040.55 = 685,763.70 : x
  2. Step 2: Convert to fraction form
    1,538,693.70/2,308,040.55 = 685,763.70/x
  3. Step 3: Cross multiply
    1,538,693.70x = 2,308,040.55 × 685,763.70
  4. Step 4: Simplify right side
    1,538,693.70x = 1,582,770,427,318.03
  5. Step 5: Solve for x
    x = 1,582,770,427,318.03/1,538,693.70
  6. Step 6: Final answer
    x = 1,028,645.55

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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.