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Finding the Third Proportional to 513,639 and 790,506

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Solution

The third proportional to 513,639 and 790,506 is: 1,216,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,639 : 790,506 = 790,506 : x
  2. Step 2: Convert to fraction form
    513,639/790,506 = 790,506/x
  3. Step 3: Cross multiply
    513,639x = 790,506 × 790,506
  4. Step 4: Simplify right side
    513,639x = 624,899,736,036
  5. Step 5: Solve for x
    x = 624,899,736,036/513,639
  6. Step 6: Final answer
    x = 1,216,612.71

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.