Home / 1,107,110.70-1,660,666.05-839,421.90

Finding the Fourth Proportional to 1,107,110.70, 1,660,666.05 and 839,421.90

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Solution

The fourth proportional to 1,107,110.70, 1,660,666.05 and 839,421.90 is: 1,259,132.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,110.70 : 1,660,666.05 = 839,421.90 : x
  2. Step 2: Convert to fraction form
    1,107,110.70/1,660,666.05 = 839,421.90/x
  3. Step 3: Cross multiply
    1,107,110.70x = 1,660,666.05 × 839,421.90
  4. Step 4: Simplify right side
    1,107,110.70x = 1,393,999,450,956.50
  5. Step 5: Solve for x
    x = 1,393,999,450,956.50/1,107,110.70
  6. Step 6: Final answer
    x = 1,259,132.85

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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.