Home / 842,761.50-1,264,317.21-281,781.42

Finding the Fourth Proportional to 842,761.50, 1,264,317.21 and 281,781.42

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Solution

The fourth proportional to 842,761.50, 1,264,317.21 and 281,781.42 is: 422,730.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,761.50 : 1,264,317.21 = 281,781.42 : x
  2. Step 2: Convert to fraction form
    842,761.50/1,264,317.21 = 281,781.42/x
  3. Step 3: Cross multiply
    842,761.50x = 1,264,317.21 × 281,781.42
  4. Step 4: Simplify right side
    842,761.50x = 356,261,101,927.34
  5. Step 5: Solve for x
    x = 356,261,101,927.34/842,761.50
  6. Step 6: Final answer
    x = 422,730.63

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Double scale
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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.