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Finding the Third Proportional to 423,382 and 915,020

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Solution

The third proportional to 423,382 and 915,020 is: 1,977,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,382 : 915,020 = 915,020 : x
  2. Step 2: Convert to fraction form
    423,382/915,020 = 915,020/x
  3. Step 3: Cross multiply
    423,382x = 915,020 × 915,020
  4. Step 4: Simplify right side
    423,382x = 837,261,600,400
  5. Step 5: Solve for x
    x = 837,261,600,400/423,382
  6. Step 6: Final answer
    x = 1,977,555.97

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.