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Finding the Third Proportional to 399,755 and 607,818

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Solution

The third proportional to 399,755 and 607,818 is: 924,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,755 : 607,818 = 607,818 : x
  2. Step 2: Convert to fraction form
    399,755/607,818 = 607,818/x
  3. Step 3: Cross multiply
    399,755x = 607,818 × 607,818
  4. Step 4: Simplify right side
    399,755x = 369,442,721,124
  5. Step 5: Solve for x
    x = 369,442,721,124/399,755
  6. Step 6: Final answer
    x = 924,172.86

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.