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Finding the Third Proportional to 425,439.84 and 915,388.59

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Solution

The third proportional to 425,439.84 and 915,388.59 is: 1,969,576.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,439.84 : 915,388.59 = 915,388.59 : x
  2. Step 2: Convert to fraction form
    425,439.84/915,388.59 = 915,388.59/x
  3. Step 3: Cross multiply
    425,439.84x = 915,388.59 × 915,388.59
  4. Step 4: Simplify right side
    425,439.84x = 837,936,277,567.60
  5. Step 5: Solve for x
    x = 837,936,277,567.60/425,439.84
  6. Step 6: Final answer
    x = 1,969,576.40

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.