Home / 493,747.20-681,371.52-278,887.68

Finding the Fourth Proportional to 493,747.20, 681,371.52 and 278,887.68

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Solution

The fourth proportional to 493,747.20, 681,371.52 and 278,887.68 is: 384,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,747.20 : 681,371.52 = 278,887.68 : x
  2. Step 2: Convert to fraction form
    493,747.20/681,371.52 = 278,887.68/x
  3. Step 3: Cross multiply
    493,747.20x = 681,371.52 × 278,887.68
  4. Step 4: Simplify right side
    493,747.20x = 190,026,122,430.87
  5. Step 5: Solve for x
    x = 190,026,122,430.87/493,747.20
  6. Step 6: Final answer
    x = 384,865.22

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1.5x scale

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.