Home / 2,086,938.40-3,129,997.20-666,611.68

Finding the Fourth Proportional to 2,086,938.40, 3,129,997.20 and 666,611.68

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Solution

The fourth proportional to 2,086,938.40, 3,129,997.20 and 666,611.68 is: 999,786.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086,938.40 : 3,129,997.20 = 666,611.68 : x
  2. Step 2: Convert to fraction form
    2,086,938.40/3,129,997.20 = 666,611.68/x
  3. Step 3: Cross multiply
    2,086,938.40x = 3,129,997.20 × 666,611.68
  4. Step 4: Simplify right side
    2,086,938.40x = 2,086,492,691,887.30
  5. Step 5: Solve for x
    x = 2,086,492,691,887.30/2,086,938.40
  6. Step 6: Final answer
    x = 999,786.43

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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.