Home / 828,336.78-1,242,520.73-259,705.28

Finding the Fourth Proportional to 828,336.78, 1,242,520.73 and 259,705.28

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Solution

The fourth proportional to 828,336.78, 1,242,520.73 and 259,705.28 is: 389,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,336.78 : 1,242,520.73 = 259,705.28 : x
  2. Step 2: Convert to fraction form
    828,336.78/1,242,520.73 = 259,705.28/x
  3. Step 3: Cross multiply
    828,336.78x = 1,242,520.73 × 259,705.28
  4. Step 4: Simplify right side
    828,336.78x = 322,689,194,090.45
  5. Step 5: Solve for x
    x = 322,689,194,090.45/828,336.78
  6. Step 6: Final answer
    x = 389,562.80

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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.