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Finding the Third Proportional to 4,200,661.69 and 6,487,558.31

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Solution

The third proportional to 4,200,661.69 and 6,487,558.31 is: 10,019,472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200,661.69 : 6,487,558.31 = 6,487,558.31 : x
  2. Step 2: Convert to fraction form
    4,200,661.69/6,487,558.31 = 6,487,558.31/x
  3. Step 3: Cross multiply
    4,200,661.69x = 6,487,558.31 × 6,487,558.31
  4. Step 4: Simplify right side
    4,200,661.69x = 42,088,412,858,087.84
  5. Step 5: Solve for x
    x = 42,088,412,858,087.84/4,200,661.69
  6. Step 6: Final answer
    x = 10,019,472.17

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.