Home / 1,188,385.50-1,639,974.69-679,086.66

Finding the Fourth Proportional to 1,188,385.50, 1,639,974.69 and 679,086.66

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Solution

The fourth proportional to 1,188,385.50, 1,639,974.69 and 679,086.66 is: 937,141.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,385.50 : 1,639,974.69 = 679,086.66 : x
  2. Step 2: Convert to fraction form
    1,188,385.50/1,639,974.69 = 679,086.66/x
  3. Step 3: Cross multiply
    1,188,385.50x = 1,639,974.69 × 679,086.66
  4. Step 4: Simplify right side
    1,188,385.50x = 1,113,684,934,716.64
  5. Step 5: Solve for x
    x = 1,113,684,934,716.64/1,188,385.50
  6. Step 6: Final answer
    x = 937,141.13

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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.