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Finding the Fourth Proportional to 488,509.80, 733,542.30 and 331,434.60

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Solution

The fourth proportional to 488,509.80, 733,542.30 and 331,434.60 is: 497,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,509.80 : 733,542.30 = 331,434.60 : x
  2. Step 2: Convert to fraction form
    488,509.80/733,542.30 = 331,434.60/x
  3. Step 3: Cross multiply
    488,509.80x = 733,542.30 × 331,434.60
  4. Step 4: Simplify right side
    488,509.80x = 243,121,298,783.58
  5. Step 5: Solve for x
    x = 243,121,298,783.58/488,509.80
  6. Step 6: Final answer
    x = 497,679.47

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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.