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Finding the Third Proportional to 489,327 and 715,108.50

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Solution

The third proportional to 489,327 and 715,108.50 is: 1,045,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,327 : 715,108.50 = 715,108.50 : x
  2. Step 2: Convert to fraction form
    489,327/715,108.50 = 715,108.50/x
  3. Step 3: Cross multiply
    489,327x = 715,108.50 × 715,108.50
  4. Step 4: Simplify right side
    489,327x = 511,380,166,772.25
  5. Step 5: Solve for x
    x = 511,380,166,772.25/489,327
  6. Step 6: Final answer
    x = 1,045,068.36

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.