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Finding the Fourth Proportional to 488,779.43, 674,542.55 and 273,988.49

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Solution

The fourth proportional to 488,779.43, 674,542.55 and 273,988.49 is: 378,119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,779.43 : 674,542.55 = 273,988.49 : x
  2. Step 2: Convert to fraction form
    488,779.43/674,542.55 = 273,988.49/x
  3. Step 3: Cross multiply
    488,779.43x = 674,542.55 × 273,988.49
  4. Step 4: Simplify right side
    488,779.43x = 184,816,892,027.51
  5. Step 5: Solve for x
    x = 184,816,892,027.51/488,779.43
  6. Step 6: Final answer
    x = 378,119.21

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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.