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Finding the Fourth Proportional to 536,643.60, 804,965.40 and 402,799.20

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Solution

The fourth proportional to 536,643.60, 804,965.40 and 402,799.20 is: 604,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,643.60 : 804,965.40 = 402,799.20 : x
  2. Step 2: Convert to fraction form
    536,643.60/804,965.40 = 402,799.20/x
  3. Step 3: Cross multiply
    536,643.60x = 804,965.40 × 402,799.20
  4. Step 4: Simplify right side
    536,643.60x = 324,239,419,147.68
  5. Step 5: Solve for x
    x = 324,239,419,147.68/536,643.60
  6. Step 6: Final answer
    x = 604,198.80

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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.