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Finding the Third Proportional to 340,639 and 716,554

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Solution

The third proportional to 340,639 and 716,554 is: 1,507,313.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,639 : 716,554 = 716,554 : x
  2. Step 2: Convert to fraction form
    340,639/716,554 = 716,554/x
  3. Step 3: Cross multiply
    340,639x = 716,554 × 716,554
  4. Step 4: Simplify right side
    340,639x = 513,449,634,916
  5. Step 5: Solve for x
    x = 513,449,634,916/340,639
  6. Step 6: Final answer
    x = 1,507,313.12

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.