Home / 449,943.09-620,921.81-245,990.76

Finding the Fourth Proportional to 449,943.09, 620,921.81 and 245,990.76

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Solution

The fourth proportional to 449,943.09, 620,921.81 and 245,990.76 is: 339,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,943.09 : 620,921.81 = 245,990.76 : x
  2. Step 2: Convert to fraction form
    449,943.09/620,921.81 = 245,990.76/x
  3. Step 3: Cross multiply
    449,943.09x = 620,921.81 × 245,990.76
  4. Step 4: Simplify right side
    449,943.09x = 152,741,027,942.48
  5. Step 5: Solve for x
    x = 152,741,027,942.48/449,943.09
  6. Step 6: Final answer
    x = 339,467.44

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1.5x scale

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.