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Finding the Fourth Proportional to 537,936.40, 807,682.20 and 405,744.40

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Solution

The fourth proportional to 537,936.40, 807,682.20 and 405,744.40 is: 609,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,936.40 : 807,682.20 = 405,744.40 : x
  2. Step 2: Convert to fraction form
    537,936.40/807,682.20 = 405,744.40/x
  3. Step 3: Cross multiply
    537,936.40x = 807,682.20 × 405,744.40
  4. Step 4: Simplify right side
    537,936.40x = 327,712,529,629.68
  5. Step 5: Solve for x
    x = 327,712,529,629.68/537,936.40
  6. Step 6: Final answer
    x = 609,203.11

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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.