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Finding the Third Proportional to 355,869 and 777,402

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Solution

The third proportional to 355,869 and 777,402 is: 1,698,248.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,869 : 777,402 = 777,402 : x
  2. Step 2: Convert to fraction form
    355,869/777,402 = 777,402/x
  3. Step 3: Cross multiply
    355,869x = 777,402 × 777,402
  4. Step 4: Simplify right side
    355,869x = 604,353,869,604
  5. Step 5: Solve for x
    x = 604,353,869,604/355,869
  6. Step 6: Final answer
    x = 1,698,248.15

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.