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Finding the Third Proportional to 4,210,193 and 9,128,421

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Solution

The third proportional to 4,210,193 and 9,128,421 is: 19,791,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,210,193 : 9,128,421 = 9,128,421 : x
  2. Step 2: Convert to fraction form
    4,210,193/9,128,421 = 9,128,421/x
  3. Step 3: Cross multiply
    4,210,193x = 9,128,421 × 9,128,421
  4. Step 4: Simplify right side
    4,210,193x = 83,328,069,953,241
  5. Step 5: Solve for x
    x = 83,328,069,953,241/4,210,193
  6. Step 6: Final answer
    x = 19,791,983.40

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.