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Finding the Fourth Proportional to 719,992.64, 993,583.60 and 397,725.24

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Solution

The fourth proportional to 719,992.64, 993,583.60 and 397,725.24 is: 548,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,992.64 : 993,583.60 = 397,725.24 : x
  2. Step 2: Convert to fraction form
    719,992.64/993,583.60 = 397,725.24/x
  3. Step 3: Cross multiply
    719,992.64x = 993,583.60 × 397,725.24
  4. Step 4: Simplify right side
    719,992.64x = 395,173,275,770.06
  5. Step 5: Solve for x
    x = 395,173,275,770.06/719,992.64
  6. Step 6: Final answer
    x = 548,857.38

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Double scale
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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.