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Finding the Third Proportional to 7,979,521 and 12,637,320

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Solution

The third proportional to 7,979,521 and 12,637,320 is: 20,013,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979,521 : 12,637,320 = 12,637,320 : x
  2. Step 2: Convert to fraction form
    7,979,521/12,637,320 = 12,637,320/x
  3. Step 3: Cross multiply
    7,979,521x = 12,637,320 × 12,637,320
  4. Step 4: Simplify right side
    7,979,521x = 159,701,856,782,400
  5. Step 5: Solve for x
    x = 159,701,856,782,400/7,979,521
  6. Step 6: Final answer
    x = 20,013,965.35

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.