Home / 413,719.80-620,579.70-272,002.20

Finding the Fourth Proportional to 413,719.80, 620,579.70 and 272,002.20

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Solution

The fourth proportional to 413,719.80, 620,579.70 and 272,002.20 is: 408,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,719.80 : 620,579.70 = 272,002.20 : x
  2. Step 2: Convert to fraction form
    413,719.80/620,579.70 = 272,002.20/x
  3. Step 3: Cross multiply
    413,719.80x = 620,579.70 × 272,002.20
  4. Step 4: Simplify right side
    413,719.80x = 168,799,043,675.34
  5. Step 5: Solve for x
    x = 168,799,043,675.34/413,719.80
  6. Step 6: Final answer
    x = 408,003.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.