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Finding the Third Proportional to 286,476 and 623,928

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Solution

The third proportional to 286,476 and 623,928 is: 1,358,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,476 : 623,928 = 623,928 : x
  2. Step 2: Convert to fraction form
    286,476/623,928 = 623,928/x
  3. Step 3: Cross multiply
    286,476x = 623,928 × 623,928
  4. Step 4: Simplify right side
    286,476x = 389,286,149,184
  5. Step 5: Solve for x
    x = 389,286,149,184/286,476
  6. Step 6: Final answer
    x = 1,358,878.75

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.