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Finding the Fourth Proportional to 520,835.61, 718,593.67 and 339,481.37

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Solution

The fourth proportional to 520,835.61, 718,593.67 and 339,481.37 is: 468,380.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,835.61 : 718,593.67 = 339,481.37 : x
  2. Step 2: Convert to fraction form
    520,835.61/718,593.67 = 339,481.37/x
  3. Step 3: Cross multiply
    520,835.61x = 718,593.67 × 339,481.37
  4. Step 4: Simplify right side
    520,835.61x = 243,949,160,919.74
  5. Step 5: Solve for x
    x = 243,949,160,919.74/520,835.61
  6. Step 6: Final answer
    x = 468,380.34

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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.