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Finding the Third Proportional to 423,018 and 655,326

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Solution

The third proportional to 423,018 and 655,326 is: 1,015,210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,018 : 655,326 = 655,326 : x
  2. Step 2: Convert to fraction form
    423,018/655,326 = 655,326/x
  3. Step 3: Cross multiply
    423,018x = 655,326 × 655,326
  4. Step 4: Simplify right side
    423,018x = 429,452,166,276
  5. Step 5: Solve for x
    x = 429,452,166,276/423,018
  6. Step 6: Final answer
    x = 1,015,210.15

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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.