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Finding the Third Proportional to 6,436,968.75 and 9,021,390.19

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Solution

The third proportional to 6,436,968.75 and 9,021,390.19 is: 12,643,448.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,436,968.75 : 9,021,390.19 = 9,021,390.19 : x
  2. Step 2: Convert to fraction form
    6,436,968.75/9,021,390.19 = 9,021,390.19/x
  3. Step 3: Cross multiply
    6,436,968.75x = 9,021,390.19 × 9,021,390.19
  4. Step 4: Simplify right side
    6,436,968.75x = 81,385,480,915,121.28
  5. Step 5: Solve for x
    x = 81,385,480,915,121.28/6,436,968.75
  6. Step 6: Final answer
    x = 12,643,448.19

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.