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Finding the Third Proportional to 368,834 and 556,638

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Solution

The third proportional to 368,834 and 556,638 is: 840,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,834 : 556,638 = 556,638 : x
  2. Step 2: Convert to fraction form
    368,834/556,638 = 556,638/x
  3. Step 3: Cross multiply
    368,834x = 556,638 × 556,638
  4. Step 4: Simplify right side
    368,834x = 309,845,863,044
  5. Step 5: Solve for x
    x = 309,845,863,044/368,834
  6. Step 6: Final answer
    x = 840,068.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.