Home / 1,269,304.48-1,903,942.12-428,446.72

Finding the Fourth Proportional to 1,269,304.48, 1,903,942.12 and 428,446.72

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Solution

The fourth proportional to 1,269,304.48, 1,903,942.12 and 428,446.72 is: 642,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,304.48 : 1,903,942.12 = 428,446.72 : x
  2. Step 2: Convert to fraction form
    1,269,304.48/1,903,942.12 = 428,446.72/x
  3. Step 3: Cross multiply
    1,269,304.48x = 1,903,942.12 × 428,446.72
  4. Step 4: Simplify right side
    1,269,304.48x = 815,737,756,383.85
  5. Step 5: Solve for x
    x = 815,737,756,383.85/1,269,304.48
  6. Step 6: Final answer
    x = 642,665.15

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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.