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Finding the Fourth Proportional to 488,994.56, 674,851.32 and 287,829.44

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Solution

The fourth proportional to 488,994.56, 674,851.32 and 287,829.44 is: 397,227.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,994.56 : 674,851.32 = 287,829.44 : x
  2. Step 2: Convert to fraction form
    488,994.56/674,851.32 = 287,829.44/x
  3. Step 3: Cross multiply
    488,994.56x = 674,851.32 × 287,829.44
  4. Step 4: Simplify right side
    488,994.56x = 194,242,077,518.86
  5. Step 5: Solve for x
    x = 194,242,077,518.86/488,994.56
  6. Step 6: Final answer
    x = 397,227.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.