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Finding the Fourth Proportional to 521,601.09, 782,401.61 and 284,814.60

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Solution

The fourth proportional to 521,601.09, 782,401.61 and 284,814.60 is: 427,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,601.09 : 782,401.61 = 284,814.60 : x
  2. Step 2: Convert to fraction form
    521,601.09/782,401.61 = 284,814.60/x
  3. Step 3: Cross multiply
    521,601.09x = 782,401.61 × 284,814.60
  4. Step 4: Simplify right side
    521,601.09x = 222,839,402,303.54
  5. Step 5: Solve for x
    x = 222,839,402,303.54/521,601.09
  6. Step 6: Final answer
    x = 427,221.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.