Home / 865,342.35-1,298,136.42-266,353.38

Finding the Fourth Proportional to 865,342.35, 1,298,136.42 and 266,353.38

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Solution

The fourth proportional to 865,342.35, 1,298,136.42 and 266,353.38 is: 399,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,342.35 : 1,298,136.42 = 266,353.38 : x
  2. Step 2: Convert to fraction form
    865,342.35/1,298,136.42 = 266,353.38/x
  3. Step 3: Cross multiply
    865,342.35x = 1,298,136.42 × 266,353.38
  4. Step 4: Simplify right side
    865,342.35x = 345,763,023,168.10
  5. Step 5: Solve for x
    x = 345,763,023,168.10/865,342.35
  6. Step 6: Final answer
    x = 399,567.90

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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.