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Finding the Fourth Proportional to 488,979.72, 674,791.10 and 274,119.72

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Solution

The fourth proportional to 488,979.72, 674,791.10 and 274,119.72 is: 378,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,979.72 : 674,791.10 = 274,119.72 : x
  2. Step 2: Convert to fraction form
    488,979.72/674,791.10 = 274,119.72/x
  3. Step 3: Cross multiply
    488,979.72x = 674,791.10 × 274,119.72
  4. Step 4: Simplify right side
    488,979.72x = 184,973,547,390.49
  5. Step 5: Solve for x
    x = 184,973,547,390.49/488,979.72
  6. Step 6: Final answer
    x = 378,284.70

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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.