Home / 1,189,231.20-1,780,201.80-655,117.20

Finding the Fourth Proportional to 1,189,231.20, 1,780,201.80 and 655,117.20

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Solution

The fourth proportional to 1,189,231.20, 1,780,201.80 and 655,117.20 is: 980,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,231.20 : 1,780,201.80 = 655,117.20 : x
  2. Step 2: Convert to fraction form
    1,189,231.20/1,780,201.80 = 655,117.20/x
  3. Step 3: Cross multiply
    1,189,231.20x = 1,780,201.80 × 655,117.20
  4. Step 4: Simplify right side
    1,189,231.20x = 1,166,240,818,650.96
  5. Step 5: Solve for x
    x = 1,166,240,818,650.96/1,189,231.20
  6. Step 6: Final answer
    x = 980,667.86

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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.