Home / 1,312,901.70-1,969,352.55-1,107,615.30

Finding the Fourth Proportional to 1,312,901.70, 1,969,352.55 and 1,107,615.30

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Solution

The fourth proportional to 1,312,901.70, 1,969,352.55 and 1,107,615.30 is: 1,661,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,901.70 : 1,969,352.55 = 1,107,615.30 : x
  2. Step 2: Convert to fraction form
    1,312,901.70/1,969,352.55 = 1,107,615.30/x
  3. Step 3: Cross multiply
    1,312,901.70x = 1,969,352.55 × 1,107,615.30
  4. Step 4: Simplify right side
    1,312,901.70x = 2,181,285,015,474.02
  5. Step 5: Solve for x
    x = 2,181,285,015,474.02/1,312,901.70
  6. Step 6: Final answer
    x = 1,661,422.95

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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.