Home / 421,508.22-629,257.76-406,742.46

Finding the Fourth Proportional to 421,508.22, 629,257.76 and 406,742.46

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Solution

The fourth proportional to 421,508.22, 629,257.76 and 406,742.46 is: 607,214.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,508.22 : 629,257.76 = 406,742.46 : x
  2. Step 2: Convert to fraction form
    421,508.22/629,257.76 = 406,742.46/x
  3. Step 3: Cross multiply
    421,508.22x = 629,257.76 × 406,742.46
  4. Step 4: Simplify right side
    421,508.22x = 255,945,847,242.78
  5. Step 5: Solve for x
    x = 255,945,847,242.78/421,508.22
  6. Step 6: Final answer
    x = 607,214.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.