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Finding the Third Proportional to 287,505 and 630,368

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Solution

The third proportional to 287,505 and 630,368 is: 1,382,110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,505 : 630,368 = 630,368 : x
  2. Step 2: Convert to fraction form
    287,505/630,368 = 630,368/x
  3. Step 3: Cross multiply
    287,505x = 630,368 × 630,368
  4. Step 4: Simplify right side
    287,505x = 397,363,815,424
  5. Step 5: Solve for x
    x = 397,363,815,424/287,505
  6. Step 6: Final answer
    x = 1,382,110.97

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.