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Finding the Fourth Proportional to 656,398.14, 905,816.89 and 369,912.48

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Solution

The fourth proportional to 656,398.14, 905,816.89 and 369,912.48 is: 510,472.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,398.14 : 905,816.89 = 369,912.48 : x
  2. Step 2: Convert to fraction form
    656,398.14/905,816.89 = 369,912.48/x
  3. Step 3: Cross multiply
    656,398.14x = 905,816.89 × 369,912.48
  4. Step 4: Simplify right side
    656,398.14x = 335,072,972,205.79
  5. Step 5: Solve for x
    x = 335,072,972,205.79/656,398.14
  6. Step 6: Final answer
    x = 510,472.15

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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.