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Finding the Third Proportional to 8,977,820 and 13,929,880

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Solution

The third proportional to 8,977,820 and 13,929,880 is: 21,613,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977,820 : 13,929,880 = 13,929,880 : x
  2. Step 2: Convert to fraction form
    8,977,820/13,929,880 = 13,929,880/x
  3. Step 3: Cross multiply
    8,977,820x = 13,929,880 × 13,929,880
  4. Step 4: Simplify right side
    8,977,820x = 194,041,556,814,400
  5. Step 5: Solve for x
    x = 194,041,556,814,400/8,977,820
  6. Step 6: Final answer
    x = 21,613,438.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.