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Finding the Third Proportional to 3,890,840 and 6,215,700

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Solution

The third proportional to 3,890,840 and 6,215,700 is: 9,929,713.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890,840 : 6,215,700 = 6,215,700 : x
  2. Step 2: Convert to fraction form
    3,890,840/6,215,700 = 6,215,700/x
  3. Step 3: Cross multiply
    3,890,840x = 6,215,700 × 6,215,700
  4. Step 4: Simplify right side
    3,890,840x = 38,634,926,490,000
  5. Step 5: Solve for x
    x = 38,634,926,490,000/3,890,840
  6. Step 6: Final answer
    x = 9,929,713.50

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.