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Finding the Third Proportional to 282,428 and 620,830

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Solution

The third proportional to 282,428 and 620,830 is: 1,364,701.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,428 : 620,830 = 620,830 : x
  2. Step 2: Convert to fraction form
    282,428/620,830 = 620,830/x
  3. Step 3: Cross multiply
    282,428x = 620,830 × 620,830
  4. Step 4: Simplify right side
    282,428x = 385,429,888,900
  5. Step 5: Solve for x
    x = 385,429,888,900/282,428
  6. Step 6: Final answer
    x = 1,364,701.41

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.