Home / 1,336,138.10-2,004,207.15-389,539.70

Finding the Fourth Proportional to 1,336,138.10, 2,004,207.15 and 389,539.70

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Solution

The fourth proportional to 1,336,138.10, 2,004,207.15 and 389,539.70 is: 584,309.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,138.10 : 2,004,207.15 = 389,539.70 : x
  2. Step 2: Convert to fraction form
    1,336,138.10/2,004,207.15 = 389,539.70/x
  3. Step 3: Cross multiply
    1,336,138.10x = 2,004,207.15 × 389,539.70
  4. Step 4: Simplify right side
    1,336,138.10x = 780,718,251,948.86
  5. Step 5: Solve for x
    x = 780,718,251,948.86/1,336,138.10
  6. Step 6: Final answer
    x = 584,309.55

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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.