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Finding the Fourth Proportional to 500,839.60, 691,154.68 and 274,484.56

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Solution

The fourth proportional to 500,839.60, 691,154.68 and 274,484.56 is: 378,786.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,839.60 : 691,154.68 = 274,484.56 : x
  2. Step 2: Convert to fraction form
    500,839.60/691,154.68 = 274,484.56/x
  3. Step 3: Cross multiply
    500,839.60x = 691,154.68 × 274,484.56
  4. Step 4: Simplify right side
    500,839.60x = 189,711,288,231.74
  5. Step 5: Solve for x
    x = 189,711,288,231.74/500,839.60
  6. Step 6: Final answer
    x = 378,786.52

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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.