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Finding the Fourth Proportional to 523,279.80, 784,919.70 and 313,327.80

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Solution

The fourth proportional to 523,279.80, 784,919.70 and 313,327.80 is: 469,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,279.80 : 784,919.70 = 313,327.80 : x
  2. Step 2: Convert to fraction form
    523,279.80/784,919.70 = 313,327.80/x
  3. Step 3: Cross multiply
    523,279.80x = 784,919.70 × 313,327.80
  4. Step 4: Simplify right side
    523,279.80x = 245,937,162,777.66
  5. Step 5: Solve for x
    x = 245,937,162,777.66/523,279.80
  6. Step 6: Final answer
    x = 469,991.70

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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.