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Finding the Third Proportional to 387,335 and 915,818

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Solution

The third proportional to 387,335 and 915,818 is: 2,165,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,335 : 915,818 = 915,818 : x
  2. Step 2: Convert to fraction form
    387,335/915,818 = 915,818/x
  3. Step 3: Cross multiply
    387,335x = 915,818 × 915,818
  4. Step 4: Simplify right side
    387,335x = 838,722,609,124
  5. Step 5: Solve for x
    x = 838,722,609,124/387,335
  6. Step 6: Final answer
    x = 2,165,367.47

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.