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Finding the Third Proportional to 8,390,871 and 18,376,308

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Solution

The third proportional to 8,390,871 and 18,376,308 is: 40,244,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390,871 : 18,376,308 = 18,376,308 : x
  2. Step 2: Convert to fraction form
    8,390,871/18,376,308 = 18,376,308/x
  3. Step 3: Cross multiply
    8,390,871x = 18,376,308 × 18,376,308
  4. Step 4: Simplify right side
    8,390,871x = 337,688,695,710,864
  5. Step 5: Solve for x
    x = 337,688,695,710,864/8,390,871
  6. Step 6: Final answer
    x = 40,244,772.65

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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.