Home / 1,226,749.40-1,839,992.86-428,046.07

Finding the Fourth Proportional to 1,226,749.40, 1,839,992.86 and 428,046.07

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Solution

The fourth proportional to 1,226,749.40, 1,839,992.86 and 428,046.07 is: 642,023.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,749.40 : 1,839,992.86 = 428,046.07 : x
  2. Step 2: Convert to fraction form
    1,226,749.40/1,839,992.86 = 428,046.07/x
  3. Step 3: Cross multiply
    1,226,749.40x = 1,839,992.86 × 428,046.07
  4. Step 4: Simplify right side
    1,226,749.40x = 787,601,711,936.12
  5. Step 5: Solve for x
    x = 787,601,711,936.12/1,226,749.40
  6. Step 6: Final answer
    x = 642,023.31

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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.