Home / 2,147,120.80-2,961,789.24-1,340,905.12

Finding the Fourth Proportional to 2,147,120.80, 2,961,789.24 and 1,340,905.12

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Solution

The fourth proportional to 2,147,120.80, 2,961,789.24 and 1,340,905.12 is: 1,849,676.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147,120.80 : 2,961,789.24 = 1,340,905.12 : x
  2. Step 2: Convert to fraction form
    2,147,120.80/2,961,789.24 = 1,340,905.12/x
  3. Step 3: Cross multiply
    2,147,120.80x = 2,961,789.24 × 1,340,905.12
  4. Step 4: Simplify right side
    2,147,120.80x = 3,971,478,356,276.91
  5. Step 5: Solve for x
    x = 3,971,478,356,276.91/2,147,120.80
  6. Step 6: Final answer
    x = 1,849,676.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.