Home / 1,631,780.40-2,448,545.40-685,246.80

Finding the Fourth Proportional to 1,631,780.40, 2,448,545.40 and 685,246.80

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Solution

The fourth proportional to 1,631,780.40, 2,448,545.40 and 685,246.80 is: 1,028,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631,780.40 : 2,448,545.40 = 685,246.80 : x
  2. Step 2: Convert to fraction form
    1,631,780.40/2,448,545.40 = 685,246.80/x
  3. Step 3: Cross multiply
    1,631,780.40x = 2,448,545.40 × 685,246.80
  4. Step 4: Simplify right side
    1,631,780.40x = 1,677,857,900,004.72
  5. Step 5: Solve for x
    x = 1,677,857,900,004.72/1,631,780.40
  6. Step 6: Final answer
    x = 1,028,237.56

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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.