Home / 839,978.40-1,259,972.64-208,892.24

Finding the Fourth Proportional to 839,978.40, 1,259,972.64 and 208,892.24

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Solution

The fourth proportional to 839,978.40, 1,259,972.64 and 208,892.24 is: 313,339.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,978.40 : 1,259,972.64 = 208,892.24 : x
  2. Step 2: Convert to fraction form
    839,978.40/1,259,972.64 = 208,892.24/x
  3. Step 3: Cross multiply
    839,978.40x = 1,259,972.64 × 208,892.24
  4. Step 4: Simplify right side
    839,978.40x = 263,198,507,108.31
  5. Step 5: Solve for x
    x = 263,198,507,108.31/839,978.40
  6. Step 6: Final answer
    x = 313,339.61

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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.