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Finding the Fourth Proportional to 520,439.20, 717,499.79 and 365,179.54

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Solution

The fourth proportional to 520,439.20, 717,499.79 and 365,179.54 is: 503,452.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,439.20 : 717,499.79 = 365,179.54 : x
  2. Step 2: Convert to fraction form
    520,439.20/717,499.79 = 365,179.54/x
  3. Step 3: Cross multiply
    520,439.20x = 717,499.79 × 365,179.54
  4. Step 4: Simplify right side
    520,439.20x = 262,016,241,436.40
  5. Step 5: Solve for x
    x = 262,016,241,436.40/520,439.20
  6. Step 6: Final answer
    x = 503,452.17

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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.