Home / 839,872.05-1,259,812.80-208,785.87

Finding the Fourth Proportional to 839,872.05, 1,259,812.80 and 208,785.87

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Solution

The fourth proportional to 839,872.05, 1,259,812.80 and 208,785.87 is: 313,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,872.05 : 1,259,812.80 = 208,785.87 : x
  2. Step 2: Convert to fraction form
    839,872.05/1,259,812.80 = 208,785.87/x
  3. Step 3: Cross multiply
    839,872.05x = 1,259,812.80 × 208,785.87
  4. Step 4: Simplify right side
    839,872.05x = 263,031,111,485.14
  5. Step 5: Solve for x
    x = 263,031,111,485.14/839,872.05
  6. Step 6: Final answer
    x = 313,179.98

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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.