Home / 1,378,765.80-1,898,777.70-996,186.60

Finding the Fourth Proportional to 1,378,765.80, 1,898,777.70 and 996,186.60

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Solution

The fourth proportional to 1,378,765.80, 1,898,777.70 and 996,186.60 is: 1,371,905.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,765.80 : 1,898,777.70 = 996,186.60 : x
  2. Step 2: Convert to fraction form
    1,378,765.80/1,898,777.70 = 996,186.60/x
  3. Step 3: Cross multiply
    1,378,765.80x = 1,898,777.70 × 996,186.60
  4. Step 4: Simplify right side
    1,378,765.80x = 1,891,536,901,118.82
  5. Step 5: Solve for x
    x = 1,891,536,901,118.82/1,378,765.80
  6. Step 6: Final answer
    x = 1,371,905.87

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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.