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Finding the Third Proportional to 615,663 and 890,865

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Solution

The third proportional to 615,663 and 890,865 is: 1,289,082.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,663 : 890,865 = 890,865 : x
  2. Step 2: Convert to fraction form
    615,663/890,865 = 890,865/x
  3. Step 3: Cross multiply
    615,663x = 890,865 × 890,865
  4. Step 4: Simplify right side
    615,663x = 793,640,448,225
  5. Step 5: Solve for x
    x = 793,640,448,225/615,663
  6. Step 6: Final answer
    x = 1,289,082.58

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.