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Finding the Fourth Proportional to 415,321,243.20, 622,981,864.80 and 415,321,243.20

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Solution

The fourth proportional to 415,321,243.20, 622,981,864.80 and 415,321,243.20 is: 622,981,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,321,243.20 : 622,981,864.80 = 415,321,243.20 : x
  2. Step 2: Convert to fraction form
    415,321,243.20/622,981,864.80 = 415,321,243.20/x
  3. Step 3: Cross multiply
    415,321,243.20x = 622,981,864.80 × 415,321,243.20
  4. Step 4: Simplify right side
    415,321,243.20x = 258,737,602,579,790,304
  5. Step 5: Solve for x
    x = 258,737,602,579,790,304/415,321,243.20
  6. Step 6: Final answer
    x = 622,981,864.80

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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.