Home / 1,211,808.15-1,672,219.17-667,914.03

Finding the Fourth Proportional to 1,211,808.15, 1,672,219.17 and 667,914.03

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Solution

The fourth proportional to 1,211,808.15, 1,672,219.17 and 667,914.03 is: 921,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,808.15 : 1,672,219.17 = 667,914.03 : x
  2. Step 2: Convert to fraction form
    1,211,808.15/1,672,219.17 = 667,914.03/x
  3. Step 3: Cross multiply
    1,211,808.15x = 1,672,219.17 × 667,914.03
  4. Step 4: Simplify right side
    1,211,808.15x = 1,116,898,644,877.96
  5. Step 5: Solve for x
    x = 1,116,898,644,877.96/1,211,808.15
  6. Step 6: Final answer
    x = 921,679.43

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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.