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Finding the Third Proportional to 289,140 and 626,548

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Solution

The third proportional to 289,140 and 626,548 is: 1,357,689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,140 : 626,548 = 626,548 : x
  2. Step 2: Convert to fraction form
    289,140/626,548 = 626,548/x
  3. Step 3: Cross multiply
    289,140x = 626,548 × 626,548
  4. Step 4: Simplify right side
    289,140x = 392,562,396,304
  5. Step 5: Solve for x
    x = 392,562,396,304/289,140
  6. Step 6: Final answer
    x = 1,357,689.69

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.