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Finding the Fourth Proportional to 493,299.80, 680,680.77 and 289,273.76

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Solution

The fourth proportional to 493,299.80, 680,680.77 and 289,273.76 is: 399,155.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,299.80 : 680,680.77 = 289,273.76 : x
  2. Step 2: Convert to fraction form
    493,299.80/680,680.77 = 289,273.76/x
  3. Step 3: Cross multiply
    493,299.80x = 680,680.77 × 289,273.76
  4. Step 4: Simplify right side
    493,299.80x = 196,903,085,697.60
  5. Step 5: Solve for x
    x = 196,903,085,697.60/493,299.80
  6. Step 6: Final answer
    x = 399,155.01

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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.