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Finding the Third Proportional to 4,623,878 and 9,929,520

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Solution

The third proportional to 4,623,878 and 9,929,520 is: 21,323,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,623,878 : 9,929,520 = 9,929,520 : x
  2. Step 2: Convert to fraction form
    4,623,878/9,929,520 = 9,929,520/x
  3. Step 3: Cross multiply
    4,623,878x = 9,929,520 × 9,929,520
  4. Step 4: Simplify right side
    4,623,878x = 98,595,367,430,400
  5. Step 5: Solve for x
    x = 98,595,367,430,400/4,623,878
  6. Step 6: Final answer
    x = 21,323,090.15

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.