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Finding the Fourth Proportional to 543,637.70, 815,451.34 and 330,464.48

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Solution

The fourth proportional to 543,637.70, 815,451.34 and 330,464.48 is: 495,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,637.70 : 815,451.34 = 330,464.48 : x
  2. Step 2: Convert to fraction form
    543,637.70/815,451.34 = 330,464.48/x
  3. Step 3: Cross multiply
    543,637.70x = 815,451.34 × 330,464.48
  4. Step 4: Simplify right side
    543,637.70x = 269,477,698,134.99
  5. Step 5: Solve for x
    x = 269,477,698,134.99/543,637.70
  6. Step 6: Final answer
    x = 495,693.55

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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.