Home / 1,188,009.40-1,780,701.90-655,912.30

Finding the Fourth Proportional to 1,188,009.40, 1,780,701.90 and 655,912.30

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Solution

The fourth proportional to 1,188,009.40, 1,780,701.90 and 655,912.30 is: 983,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,009.40 : 1,780,701.90 = 655,912.30 : x
  2. Step 2: Convert to fraction form
    1,188,009.40/1,780,701.90 = 655,912.30/x
  3. Step 3: Cross multiply
    1,188,009.40x = 1,780,701.90 × 655,912.30
  4. Step 4: Simplify right side
    1,188,009.40x = 1,167,984,278,843.37
  5. Step 5: Solve for x
    x = 1,167,984,278,843.37/1,188,009.40
  6. Step 6: Final answer
    x = 983,143.97

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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.