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Finding the Third Proportional to 511,605 and 767,407.50

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Solution

The third proportional to 511,605 and 767,407.50 is: 1,151,111.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,605 : 767,407.50 = 767,407.50 : x
  2. Step 2: Convert to fraction form
    511,605/767,407.50 = 767,407.50/x
  3. Step 3: Cross multiply
    511,605x = 767,407.50 × 767,407.50
  4. Step 4: Simplify right side
    511,605x = 588,914,271,056.25
  5. Step 5: Solve for x
    x = 588,914,271,056.25/511,605
  6. Step 6: Final answer
    x = 1,151,111.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.