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Finding the Fourth Proportional to 496,620.80, 746,486.40 and 487,289.60

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Solution

The fourth proportional to 496,620.80, 746,486.40 and 487,289.60 is: 732,460.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,620.80 : 746,486.40 = 487,289.60 : x
  2. Step 2: Convert to fraction form
    496,620.80/746,486.40 = 487,289.60/x
  3. Step 3: Cross multiply
    496,620.80x = 746,486.40 × 487,289.60
  4. Step 4: Simplify right side
    496,620.80x = 363,755,059,261.44
  5. Step 5: Solve for x
    x = 363,755,059,261.44/496,620.80
  6. Step 6: Final answer
    x = 732,460.38

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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.