Home / 493,035.20-680,370.90-309,372.70

Finding the Fourth Proportional to 493,035.20, 680,370.90 and 309,372.70

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Solution

The fourth proportional to 493,035.20, 680,370.90 and 309,372.70 is: 426,923.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,035.20 : 680,370.90 = 309,372.70 : x
  2. Step 2: Convert to fraction form
    493,035.20/680,370.90 = 309,372.70/x
  3. Step 3: Cross multiply
    493,035.20x = 680,370.90 × 309,372.70
  4. Step 4: Simplify right side
    493,035.20x = 210,488,182,334.43
  5. Step 5: Solve for x
    x = 210,488,182,334.43/493,035.20
  6. Step 6: Final answer
    x = 426,923.23

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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.