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Finding the Third Proportional to 4,290,987 and 6,480,221

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Solution

The third proportional to 4,290,987 and 6,480,221 is: 9,786,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290,987 : 6,480,221 = 6,480,221 : x
  2. Step 2: Convert to fraction form
    4,290,987/6,480,221 = 6,480,221/x
  3. Step 3: Cross multiply
    4,290,987x = 6,480,221 × 6,480,221
  4. Step 4: Simplify right side
    4,290,987x = 41,993,264,208,841
  5. Step 5: Solve for x
    x = 41,993,264,208,841/4,290,987
  6. Step 6: Final answer
    x = 9,786,388.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.