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Finding the Third Proportional to 286,945.50 and 628,435.50

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Solution

The third proportional to 286,945.50 and 628,435.50 is: 1,376,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,945.50 : 628,435.50 = 628,435.50 : x
  2. Step 2: Convert to fraction form
    286,945.50/628,435.50 = 628,435.50/x
  3. Step 3: Cross multiply
    286,945.50x = 628,435.50 × 628,435.50
  4. Step 4: Simplify right side
    286,945.50x = 394,931,177,660.25
  5. Step 5: Solve for x
    x = 394,931,177,660.25/286,945.50
  6. Step 6: Final answer
    x = 1,376,328.18

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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.