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Finding the Third Proportional to 345,298 and 754,639

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Solution

The third proportional to 345,298 and 754,639 is: 1,649,242.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,298 : 754,639 = 754,639 : x
  2. Step 2: Convert to fraction form
    345,298/754,639 = 754,639/x
  3. Step 3: Cross multiply
    345,298x = 754,639 × 754,639
  4. Step 4: Simplify right side
    345,298x = 569,480,020,321
  5. Step 5: Solve for x
    x = 569,480,020,321/345,298
  6. Step 6: Final answer
    x = 1,649,242.16

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.