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Finding the Third Proportional to 989,145 and 2,118,222

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Solution

The third proportional to 989,145 and 2,118,222 is: 4,536,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,145 : 2,118,222 = 2,118,222 : x
  2. Step 2: Convert to fraction form
    989,145/2,118,222 = 2,118,222/x
  3. Step 3: Cross multiply
    989,145x = 2,118,222 × 2,118,222
  4. Step 4: Simplify right side
    989,145x = 4,486,864,441,284
  5. Step 5: Solve for x
    x = 4,486,864,441,284/989,145
  6. Step 6: Final answer
    x = 4,536,103.85

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.