Home / 763,731.73-1,145,745.11-290,380.29

Finding the Fourth Proportional to 763,731.73, 1,145,745.11 and 290,380.29

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Solution

The fourth proportional to 763,731.73, 1,145,745.11 and 290,380.29 is: 435,626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,731.73 : 1,145,745.11 = 290,380.29 : x
  2. Step 2: Convert to fraction form
    763,731.73/1,145,745.11 = 290,380.29/x
  3. Step 3: Cross multiply
    763,731.73x = 1,145,745.11 × 290,380.29
  4. Step 4: Simplify right side
    763,731.73x = 332,701,797,307.88
  5. Step 5: Solve for x
    x = 332,701,797,307.88/763,731.73
  6. Step 6: Final answer
    x = 435,626.52

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1.5x scale

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.