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Finding the Fourth Proportional to 479,021.34, 661,059.02 and 309,550.71

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Solution

The fourth proportional to 479,021.34, 661,059.02 and 309,550.71 is: 427,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,021.34 : 661,059.02 = 309,550.71 : x
  2. Step 2: Convert to fraction form
    479,021.34/661,059.02 = 309,550.71/x
  3. Step 3: Cross multiply
    479,021.34x = 661,059.02 × 309,550.71
  4. Step 4: Simplify right side
    479,021.34x = 204,631,292,245.75
  5. Step 5: Solve for x
    x = 204,631,292,245.75/479,021.34
  6. Step 6: Final answer
    x = 427,186.17

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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.