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Finding the Third Proportional to 386,517 and 577,998

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Solution

The third proportional to 386,517 and 577,998 is: 864,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,517 : 577,998 = 577,998 : x
  2. Step 2: Convert to fraction form
    386,517/577,998 = 577,998/x
  3. Step 3: Cross multiply
    386,517x = 577,998 × 577,998
  4. Step 4: Simplify right side
    386,517x = 334,081,688,004
  5. Step 5: Solve for x
    x = 334,081,688,004/386,517
  6. Step 6: Final answer
    x = 864,338.92

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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.