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Finding the Third Proportional to 4,518,420 and 9,771,030

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Solution

The third proportional to 4,518,420 and 9,771,030 is: 21,129,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,518,420 : 9,771,030 = 9,771,030 : x
  2. Step 2: Convert to fraction form
    4,518,420/9,771,030 = 9,771,030/x
  3. Step 3: Cross multiply
    4,518,420x = 9,771,030 × 9,771,030
  4. Step 4: Simplify right side
    4,518,420x = 95,473,027,260,900
  5. Step 5: Solve for x
    x = 95,473,027,260,900/4,518,420
  6. Step 6: Final answer
    x = 21,129,737.22

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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.