Home / 2,308,500.70-3,185,728.05-1,289,905.45

Finding the Fourth Proportional to 2,308,500.70, 3,185,728.05 and 1,289,905.45

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Solution

The fourth proportional to 2,308,500.70, 3,185,728.05 and 1,289,905.45 is: 1,780,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308,500.70 : 3,185,728.05 = 1,289,905.45 : x
  2. Step 2: Convert to fraction form
    2,308,500.70/3,185,728.05 = 1,289,905.45/x
  3. Step 3: Cross multiply
    2,308,500.70x = 3,185,728.05 × 1,289,905.45
  4. Step 4: Simplify right side
    2,308,500.70x = 4,109,287,973,912.87
  5. Step 5: Solve for x
    x = 4,109,287,973,912.87/2,308,500.70
  6. Step 6: Final answer
    x = 1,780,067.89

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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.