Home / 1,188,007.40-1,780,698.90-655,910.30

Finding the Fourth Proportional to 1,188,007.40, 1,780,698.90 and 655,910.30

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Solution

The fourth proportional to 1,188,007.40, 1,780,698.90 and 655,910.30 is: 983,140.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,007.40 : 1,780,698.90 = 655,910.30 : x
  2. Step 2: Convert to fraction form
    1,188,007.40/1,780,698.90 = 655,910.30/x
  3. Step 3: Cross multiply
    1,188,007.40x = 1,780,698.90 × 655,910.30
  4. Step 4: Simplify right side
    1,188,007.40x = 1,167,978,749,708.67
  5. Step 5: Solve for x
    x = 1,167,978,749,708.67/1,188,007.40
  6. Step 6: Final answer
    x = 983,140.97

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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.