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Finding the Fourth Proportional to 644,707,188.69, 889,690,572.17 and 362,450,887.65

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Solution

The fourth proportional to 644,707,188.69, 889,690,572.17 and 362,450,887.65 is: 500,179,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,707,188.69 : 889,690,572.17 = 362,450,887.65 : x
  2. Step 2: Convert to fraction form
    644,707,188.69/889,690,572.17 = 362,450,887.65/x
  3. Step 3: Cross multiply
    644,707,188.69x = 889,690,572.17 × 362,450,887.65
  4. Step 4: Simplify right side
    644,707,188.69x = 322,469,137,615,040,576
  5. Step 5: Solve for x
    x = 322,469,137,615,040,576/644,707,188.69
  6. Step 6: Final answer
    x = 500,179,218.21

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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.