Home / 449,631.56-620,780.82-288,556.04

Finding the Fourth Proportional to 449,631.56, 620,780.82 and 288,556.04

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Solution

The fourth proportional to 449,631.56, 620,780.82 and 288,556.04 is: 398,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,631.56 : 620,780.82 = 288,556.04 : x
  2. Step 2: Convert to fraction form
    449,631.56/620,780.82 = 288,556.04/x
  3. Step 3: Cross multiply
    449,631.56x = 620,780.82 × 288,556.04
  4. Step 4: Simplify right side
    449,631.56x = 179,130,055,127.15
  5. Step 5: Solve for x
    x = 179,130,055,127.15/449,631.56
  6. Step 6: Final answer
    x = 398,392.98

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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.