Home / 2,117,998.40-3,177,560.80-919,406.40

Finding the Fourth Proportional to 2,117,998.40, 3,177,560.80 and 919,406.40

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Solution

The fourth proportional to 2,117,998.40, 3,177,560.80 and 919,406.40 is: 1,379,354.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117,998.40 : 3,177,560.80 = 919,406.40 : x
  2. Step 2: Convert to fraction form
    2,117,998.40/3,177,560.80 = 919,406.40/x
  3. Step 3: Cross multiply
    2,117,998.40x = 3,177,560.80 × 919,406.40
  4. Step 4: Simplify right side
    2,117,998.40x = 2,921,469,735,909.12
  5. Step 5: Solve for x
    x = 2,921,469,735,909.12/2,117,998.40
  6. Step 6: Final answer
    x = 1,379,354.08

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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.