Home / 1,288,181.78-1,932,576.15-389,630.96

Finding the Fourth Proportional to 1,288,181.78, 1,932,576.15 and 389,630.96

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Solution

The fourth proportional to 1,288,181.78, 1,932,576.15 and 389,630.96 is: 584,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,181.78 : 1,932,576.15 = 389,630.96 : x
  2. Step 2: Convert to fraction form
    1,288,181.78/1,932,576.15 = 389,630.96/x
  3. Step 3: Cross multiply
    1,288,181.78x = 1,932,576.15 × 389,630.96
  4. Step 4: Simplify right side
    1,288,181.78x = 752,991,490,934.72
  5. Step 5: Solve for x
    x = 752,991,490,934.72/1,288,181.78
  6. Step 6: Final answer
    x = 584,538.23

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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.