Home / 693,553.80-1,040,330.70-427,614.60

Finding the Fourth Proportional to 693,553.80, 1,040,330.70 and 427,614.60

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Solution

The fourth proportional to 693,553.80, 1,040,330.70 and 427,614.60 is: 641,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,553.80 : 1,040,330.70 = 427,614.60 : x
  2. Step 2: Convert to fraction form
    693,553.80/1,040,330.70 = 427,614.60/x
  3. Step 3: Cross multiply
    693,553.80x = 1,040,330.70 × 427,614.60
  4. Step 4: Simplify right side
    693,553.80x = 444,860,596,148.22
  5. Step 5: Solve for x
    x = 444,860,596,148.22/693,553.80
  6. Step 6: Final answer
    x = 641,421.90

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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.