Home / 493,542.72-681,086.88-278,680.32

Finding the Fourth Proportional to 493,542.72, 681,086.88 and 278,680.32

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Solution

The fourth proportional to 493,542.72, 681,086.88 and 278,680.32 is: 384,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,542.72 : 681,086.88 = 278,680.32 : x
  2. Step 2: Convert to fraction form
    493,542.72/681,086.88 = 278,680.32/x
  3. Step 3: Cross multiply
    493,542.72x = 681,086.88 × 278,680.32
  4. Step 4: Simplify right side
    493,542.72x = 189,805,509,666.20
  5. Step 5: Solve for x
    x = 189,805,509,666.20/493,542.72
  6. Step 6: Final answer
    x = 384,577.67

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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.