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Finding the Fourth Proportional to 587,144.09, 810,245.11 and 345,442.21

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Solution

The fourth proportional to 587,144.09, 810,245.11 and 345,442.21 is: 476,702.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,144.09 : 810,245.11 = 345,442.21 : x
  2. Step 2: Convert to fraction form
    587,144.09/810,245.11 = 345,442.21/x
  3. Step 3: Cross multiply
    587,144.09x = 810,245.11 × 345,442.21
  4. Step 4: Simplify right side
    587,144.09x = 279,892,861,440.09
  5. Step 5: Solve for x
    x = 279,892,861,440.09/587,144.09
  6. Step 6: Final answer
    x = 476,702.17

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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.