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Finding the Third Proportional to 388,810.13 and 555,999.19

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Solution

The third proportional to 388,810.13 and 555,999.19 is: 795,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,810.13 : 555,999.19 = 555,999.19 : x
  2. Step 2: Convert to fraction form
    388,810.13/555,999.19 = 555,999.19/x
  3. Step 3: Cross multiply
    388,810.13x = 555,999.19 × 555,999.19
  4. Step 4: Simplify right side
    388,810.13x = 309,135,096,500.66
  5. Step 5: Solve for x
    x = 309,135,096,500.66/388,810.13
  6. Step 6: Final answer
    x = 795,079.85

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.