Home / 2,128,538.40-3,192,807.60-780,252.90

Finding the Fourth Proportional to 2,128,538.40, 3,192,807.60 and 780,252.90

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Solution

The fourth proportional to 2,128,538.40, 3,192,807.60 and 780,252.90 is: 1,170,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,538.40 : 3,192,807.60 = 780,252.90 : x
  2. Step 2: Convert to fraction form
    2,128,538.40/3,192,807.60 = 780,252.90/x
  3. Step 3: Cross multiply
    2,128,538.40x = 3,192,807.60 × 780,252.90
  4. Step 4: Simplify right side
    2,128,538.40x = 2,491,197,389,042.04
  5. Step 5: Solve for x
    x = 2,491,197,389,042.04/2,128,538.40
  6. Step 6: Final answer
    x = 1,170,379.35

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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.