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Finding the Fourth Proportional to 719,602.34, 993,090.17 and 397,311.44

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Solution

The fourth proportional to 719,602.34, 993,090.17 and 397,311.44 is: 548,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,602.34 : 993,090.17 = 397,311.44 : x
  2. Step 2: Convert to fraction form
    719,602.34/993,090.17 = 397,311.44/x
  3. Step 3: Cross multiply
    719,602.34x = 993,090.17 × 397,311.44
  4. Step 4: Simplify right side
    719,602.34x = 394,566,085,988.71
  5. Step 5: Solve for x
    x = 394,566,085,988.71/719,602.34
  6. Step 6: Final answer
    x = 548,311.29

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.