Home / 488,947.25-674,749.64-285,139.51

Finding the Fourth Proportional to 488,947.25, 674,749.64 and 285,139.51

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Solution

The fourth proportional to 488,947.25, 674,749.64 and 285,139.51 is: 393,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,947.25 : 674,749.64 = 285,139.51 : x
  2. Step 2: Convert to fraction form
    488,947.25/674,749.64 = 285,139.51/x
  3. Step 3: Cross multiply
    488,947.25x = 674,749.64 × 285,139.51
  4. Step 4: Simplify right side
    488,947.25x = 192,397,776,922.83
  5. Step 5: Solve for x
    x = 192,397,776,922.83/488,947.25
  6. Step 6: Final answer
    x = 393,493.93

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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.