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Finding the Fourth Proportional to 539,530.20, 809,295.30 and 329,578.20

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Solution

The fourth proportional to 539,530.20, 809,295.30 and 329,578.20 is: 494,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,530.20 : 809,295.30 = 329,578.20 : x
  2. Step 2: Convert to fraction form
    539,530.20/809,295.30 = 329,578.20/x
  3. Step 3: Cross multiply
    539,530.20x = 809,295.30 × 329,578.20
  4. Step 4: Simplify right side
    539,530.20x = 266,726,088,242.46
  5. Step 5: Solve for x
    x = 266,726,088,242.46/539,530.20
  6. Step 6: Final answer
    x = 494,367.30

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Half scale
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Double scale
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Similar ratio
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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.