Home / 1,272,087.09-1,908,373.64-419,404.41

Finding the Fourth Proportional to 1,272,087.09, 1,908,373.64 and 419,404.41

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Solution

The fourth proportional to 1,272,087.09, 1,908,373.64 and 419,404.41 is: 629,186.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,087.09 : 1,908,373.64 = 419,404.41 : x
  2. Step 2: Convert to fraction form
    1,272,087.09/1,908,373.64 = 419,404.41/x
  3. Step 3: Cross multiply
    1,272,087.09x = 1,908,373.64 × 419,404.41
  4. Step 4: Simplify right side
    1,272,087.09x = 800,380,318,446.73
  5. Step 5: Solve for x
    x = 800,380,318,446.73/1,272,087.09
  6. Step 6: Final answer
    x = 629,186.73

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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.