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Finding the Fourth Proportional to 539,993.60, 810,508.80 and 274,054.40

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Solution

The fourth proportional to 539,993.60, 810,508.80 and 274,054.40 is: 411,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,993.60 : 810,508.80 = 274,054.40 : x
  2. Step 2: Convert to fraction form
    539,993.60/810,508.80 = 274,054.40/x
  3. Step 3: Cross multiply
    539,993.60x = 810,508.80 × 274,054.40
  4. Step 4: Simplify right side
    539,993.60x = 222,123,502,878.72
  5. Step 5: Solve for x
    x = 222,123,502,878.72/539,993.60
  6. Step 6: Final answer
    x = 411,344.70

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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.