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Finding the Third Proportional to 393,420.38 and 577,219.50

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Solution

The third proportional to 393,420.38 and 577,219.50 is: 846,886.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,420.38 : 577,219.50 = 577,219.50 : x
  2. Step 2: Convert to fraction form
    393,420.38/577,219.50 = 577,219.50/x
  3. Step 3: Cross multiply
    393,420.38x = 577,219.50 × 577,219.50
  4. Step 4: Simplify right side
    393,420.38x = 333,182,351,180.25
  5. Step 5: Solve for x
    x = 333,182,351,180.25/393,420.38
  6. Step 6: Final answer
    x = 846,886.36

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.