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Finding the Fourth Proportional to 493,586.76, 681,144.48 and 278,714.28

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Solution

The fourth proportional to 493,586.76, 681,144.48 and 278,714.28 is: 384,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,586.76 : 681,144.48 = 278,714.28 : x
  2. Step 2: Convert to fraction form
    493,586.76/681,144.48 = 278,714.28/x
  3. Step 3: Cross multiply
    493,586.76x = 681,144.48 × 278,714.28
  4. Step 4: Simplify right side
    493,586.76x = 189,844,693,319.17
  5. Step 5: Solve for x
    x = 189,844,693,319.17/493,586.76
  6. Step 6: Final answer
    x = 384,622.74

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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.