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Finding the Fourth Proportional to 531,231.40, 796,847.10 and 487,928.80

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Solution

The fourth proportional to 531,231.40, 796,847.10 and 487,928.80 is: 731,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,231.40 : 796,847.10 = 487,928.80 : x
  2. Step 2: Convert to fraction form
    531,231.40/796,847.10 = 487,928.80/x
  3. Step 3: Cross multiply
    531,231.40x = 796,847.10 × 487,928.80
  4. Step 4: Simplify right side
    531,231.40x = 388,804,649,286.48
  5. Step 5: Solve for x
    x = 388,804,649,286.48/531,231.40
  6. Step 6: Final answer
    x = 731,893.20

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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.