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Finding the Fourth Proportional to 499,282.80, 689,134.08 and 284,550.24

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Solution

The fourth proportional to 499,282.80, 689,134.08 and 284,550.24 is: 392,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,282.80 : 689,134.08 = 284,550.24 : x
  2. Step 2: Convert to fraction form
    499,282.80/689,134.08 = 284,550.24/x
  3. Step 3: Cross multiply
    499,282.80x = 689,134.08 × 284,550.24
  4. Step 4: Simplify right side
    499,282.80x = 196,093,267,856.18
  5. Step 5: Solve for x
    x = 196,093,267,856.18/499,282.80
  6. Step 6: Final answer
    x = 392,749.90

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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.