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Finding the Fourth Proportional to 413,631.60, 620,447.40 and 330,687.60

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Solution

The fourth proportional to 413,631.60, 620,447.40 and 330,687.60 is: 496,031.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,631.60 : 620,447.40 = 330,687.60 : x
  2. Step 2: Convert to fraction form
    413,631.60/620,447.40 = 330,687.60/x
  3. Step 3: Cross multiply
    413,631.60x = 620,447.40 × 330,687.60
  4. Step 4: Simplify right side
    413,631.60x = 205,174,261,632.24
  5. Step 5: Solve for x
    x = 205,174,261,632.24/413,631.60
  6. Step 6: Final answer
    x = 496,031.40

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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.