Home / 479,213.20-661,526.76-309,530.08

Finding the Fourth Proportional to 479,213.20, 661,526.76 and 309,530.08

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Solution

The fourth proportional to 479,213.20, 661,526.76 and 309,530.08 is: 427,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,213.20 : 661,526.76 = 309,530.08 : x
  2. Step 2: Convert to fraction form
    479,213.20/661,526.76 = 309,530.08/x
  3. Step 3: Cross multiply
    479,213.20x = 661,526.76 × 309,530.08
  4. Step 4: Simplify right side
    479,213.20x = 204,762,430,944.94
  5. Step 5: Solve for x
    x = 204,762,430,944.94/479,213.20
  6. Step 6: Final answer
    x = 427,288.80

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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.