Home / 825,716.80-1,238,575.20-685,748.80

Finding the Fourth Proportional to 825,716.80, 1,238,575.20 and 685,748.80

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Solution

The fourth proportional to 825,716.80, 1,238,575.20 and 685,748.80 is: 1,028,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,716.80 : 1,238,575.20 = 685,748.80 : x
  2. Step 2: Convert to fraction form
    825,716.80/1,238,575.20 = 685,748.80/x
  3. Step 3: Cross multiply
    825,716.80x = 1,238,575.20 × 685,748.80
  4. Step 4: Simplify right side
    825,716.80x = 849,351,457,109.76
  5. Step 5: Solve for x
    x = 849,351,457,109.76/825,716.80
  6. Step 6: Final answer
    x = 1,028,623.20

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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.