Home / 1,279,699.70-1,766,784.30-814,815.95

Finding the Fourth Proportional to 1,279,699.70, 1,766,784.30 and 814,815.95

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Solution

The fourth proportional to 1,279,699.70, 1,766,784.30 and 814,815.95 is: 1,124,954.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,699.70 : 1,766,784.30 = 814,815.95 : x
  2. Step 2: Convert to fraction form
    1,279,699.70/1,766,784.30 = 814,815.95/x
  3. Step 3: Cross multiply
    1,279,699.70x = 1,766,784.30 × 814,815.95
  4. Step 4: Simplify right side
    1,279,699.70x = 1,439,604,019,015.66
  5. Step 5: Solve for x
    x = 1,439,604,019,015.66/1,279,699.70
  6. Step 6: Final answer
    x = 1,124,954.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.