Home / 1,147,999.20-1,721,998.80-727,749.60

Finding the Fourth Proportional to 1,147,999.20, 1,721,998.80 and 727,749.60

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Solution

The fourth proportional to 1,147,999.20, 1,721,998.80 and 727,749.60 is: 1,091,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,999.20 : 1,721,998.80 = 727,749.60 : x
  2. Step 2: Convert to fraction form
    1,147,999.20/1,721,998.80 = 727,749.60/x
  3. Step 3: Cross multiply
    1,147,999.20x = 1,721,998.80 × 727,749.60
  4. Step 4: Simplify right side
    1,147,999.20x = 1,253,183,937,900.48
  5. Step 5: Solve for x
    x = 1,253,183,937,900.48/1,147,999.20
  6. Step 6: Final answer
    x = 1,091,624.40

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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.