Home / 494,384.11-682,255.31-290,443.52

Finding the Fourth Proportional to 494,384.11, 682,255.31 and 290,443.52

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Solution

The fourth proportional to 494,384.11, 682,255.31 and 290,443.52 is: 400,815.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,384.11 : 682,255.31 = 290,443.52 : x
  2. Step 2: Convert to fraction form
    494,384.11/682,255.31 = 290,443.52/x
  3. Step 3: Cross multiply
    494,384.11x = 682,255.31 × 290,443.52
  4. Step 4: Simplify right side
    494,384.11x = 198,156,634,028.51
  5. Step 5: Solve for x
    x = 198,156,634,028.51/494,384.11
  6. Step 6: Final answer
    x = 400,815.14

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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.