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Finding the Third Proportional to 4,208,312 and 9,203,920

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Solution

The third proportional to 4,208,312 and 9,203,920 is: 20,129,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,208,312 : 9,203,920 = 9,203,920 : x
  2. Step 2: Convert to fraction form
    4,208,312/9,203,920 = 9,203,920/x
  3. Step 3: Cross multiply
    4,208,312x = 9,203,920 × 9,203,920
  4. Step 4: Simplify right side
    4,208,312x = 84,712,143,366,400
  5. Step 5: Solve for x
    x = 84,712,143,366,400/4,208,312
  6. Step 6: Final answer
    x = 20,129,720.27

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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.