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Finding the Third Proportional to 7,128,444 and 15,369,720

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Solution

The third proportional to 7,128,444 and 15,369,720 is: 33,138,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,444 : 15,369,720 = 15,369,720 : x
  2. Step 2: Convert to fraction form
    7,128,444/15,369,720 = 15,369,720/x
  3. Step 3: Cross multiply
    7,128,444x = 15,369,720 × 15,369,720
  4. Step 4: Simplify right side
    7,128,444x = 236,228,292,878,400
  5. Step 5: Solve for x
    x = 236,228,292,878,400/7,128,444
  6. Step 6: Final answer
    x = 33,138,829.86

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.