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Finding the Third Proportional to 386,432 and 824,220.50

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Solution

The third proportional to 386,432 and 824,220.50 is: 1,757,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,432 : 824,220.50 = 824,220.50 : x
  2. Step 2: Convert to fraction form
    386,432/824,220.50 = 824,220.50/x
  3. Step 3: Cross multiply
    386,432x = 824,220.50 × 824,220.50
  4. Step 4: Simplify right side
    386,432x = 679,339,432,620.25
  5. Step 5: Solve for x
    x = 679,339,432,620.25/386,432
  6. Step 6: Final answer
    x = 1,757,979.24

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.