Home / 449,942.09-620,920.43-245,989.76

Finding the Fourth Proportional to 449,942.09, 620,920.43 and 245,989.76

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Solution

The fourth proportional to 449,942.09, 620,920.43 and 245,989.76 is: 339,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,942.09 : 620,920.43 = 245,989.76 : x
  2. Step 2: Convert to fraction form
    449,942.09/620,920.43 = 245,989.76/x
  3. Step 3: Cross multiply
    449,942.09x = 620,920.43 × 245,989.76
  4. Step 4: Simplify right side
    449,942.09x = 152,740,063,220.25
  5. Step 5: Solve for x
    x = 152,740,063,220.25/449,942.09
  6. Step 6: Final answer
    x = 339,466.05

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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.