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Finding the Fourth Proportional to 587,453.10, 810,624.20 and 345,721.29

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Solution

The fourth proportional to 587,453.10, 810,624.20 and 345,721.29 is: 477,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,453.10 : 810,624.20 = 345,721.29 : x
  2. Step 2: Convert to fraction form
    587,453.10/810,624.20 = 345,721.29/x
  3. Step 3: Cross multiply
    587,453.10x = 810,624.20 × 345,721.29
  4. Step 4: Simplify right side
    587,453.10x = 280,250,044,129.22
  5. Step 5: Solve for x
    x = 280,250,044,129.22/587,453.10
  6. Step 6: Final answer
    x = 477,059.44

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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.