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Finding the Fourth Proportional to 413,833.60, 620,750.40 and 308,857.60

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Solution

The fourth proportional to 413,833.60, 620,750.40 and 308,857.60 is: 463,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,833.60 : 620,750.40 = 308,857.60 : x
  2. Step 2: Convert to fraction form
    413,833.60/620,750.40 = 308,857.60/x
  3. Step 3: Cross multiply
    413,833.60x = 620,750.40 × 308,857.60
  4. Step 4: Simplify right side
    413,833.60x = 191,723,478,743.04
  5. Step 5: Solve for x
    x = 191,723,478,743.04/413,833.60
  6. Step 6: Final answer
    x = 463,286.40

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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.