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Finding the Fourth Proportional to 488,978.54, 674,701.16 and 282,171.48

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Solution

The fourth proportional to 488,978.54, 674,701.16 and 282,171.48 is: 389,345.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,978.54 : 674,701.16 = 282,171.48 : x
  2. Step 2: Convert to fraction form
    488,978.54/674,701.16 = 282,171.48/x
  3. Step 3: Cross multiply
    488,978.54x = 674,701.16 × 282,171.48
  4. Step 4: Simplify right side
    488,978.54x = 190,381,424,874.92
  5. Step 5: Solve for x
    x = 190,381,424,874.92/488,978.54
  6. Step 6: Final answer
    x = 389,345.15

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