Home / 1,288,359.30-1,932,757.65-389,793.90

Finding the Fourth Proportional to 1,288,359.30, 1,932,757.65 and 389,793.90

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Solution

The fourth proportional to 1,288,359.30, 1,932,757.65 and 389,793.90 is: 584,757.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,359.30 : 1,932,757.65 = 389,793.90 : x
  2. Step 2: Convert to fraction form
    1,288,359.30/1,932,757.65 = 389,793.90/x
  3. Step 3: Cross multiply
    1,288,359.30x = 1,932,757.65 × 389,793.90
  4. Step 4: Simplify right side
    1,288,359.30x = 753,377,142,148.34
  5. Step 5: Solve for x
    x = 753,377,142,148.34/1,288,359.30
  6. Step 6: Final answer
    x = 584,757.02

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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.