Home / 2,155,863.60-3,233,243.80-639,191.88

Finding the Fourth Proportional to 2,155,863.60, 3,233,243.80 and 639,191.88

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Solution

The fourth proportional to 2,155,863.60, 3,233,243.80 and 639,191.88 is: 958,624.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155,863.60 : 3,233,243.80 = 639,191.88 : x
  2. Step 2: Convert to fraction form
    2,155,863.60/3,233,243.80 = 639,191.88/x
  3. Step 3: Cross multiply
    2,155,863.60x = 3,233,243.80 × 639,191.88
  4. Step 4: Simplify right side
    2,155,863.60x = 2,066,663,183,020.34
  5. Step 5: Solve for x
    x = 2,066,663,183,020.34/2,155,863.60
  6. Step 6: Final answer
    x = 958,624.28

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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.