Home / 493,509.20-681,082.92-278,701.52

Finding the Fourth Proportional to 493,509.20, 681,082.92 and 278,701.52

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Solution

The fourth proportional to 493,509.20, 681,082.92 and 278,701.52 is: 384,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,509.20 : 681,082.92 = 278,701.52 : x
  2. Step 2: Convert to fraction form
    493,509.20/681,082.92 = 278,701.52/x
  3. Step 3: Cross multiply
    493,509.20x = 681,082.92 × 278,701.52
  4. Step 4: Simplify right side
    493,509.20x = 189,818,845,050.04
  5. Step 5: Solve for x
    x = 189,818,845,050.04/493,509.20
  6. Step 6: Final answer
    x = 384,630.81

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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.