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Finding the Third Proportional to 4,322,390 and 9,315,136

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Solution

The third proportional to 4,322,390 and 9,315,136 is: 20,074,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,322,390 : 9,315,136 = 9,315,136 : x
  2. Step 2: Convert to fraction form
    4,322,390/9,315,136 = 9,315,136/x
  3. Step 3: Cross multiply
    4,322,390x = 9,315,136 × 9,315,136
  4. Step 4: Simplify right side
    4,322,390x = 86,771,758,698,496
  5. Step 5: Solve for x
    x = 86,771,758,698,496/4,322,390
  6. Step 6: Final answer
    x = 20,074,948.97

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.