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Finding the Third Proportional to 3,937,428 and 8,420,832

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Solution

The third proportional to 3,937,428 and 8,420,832 is: 18,009,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937,428 : 8,420,832 = 8,420,832 : x
  2. Step 2: Convert to fraction form
    3,937,428/8,420,832 = 8,420,832/x
  3. Step 3: Cross multiply
    3,937,428x = 8,420,832 × 8,420,832
  4. Step 4: Simplify right side
    3,937,428x = 70,910,411,572,224
  5. Step 5: Solve for x
    x = 70,910,411,572,224/3,937,428
  6. Step 6: Final answer
    x = 18,009,322.73

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.