Home / 1,336,641.20-2,004,961.80-390,107.60

Finding the Fourth Proportional to 1,336,641.20, 2,004,961.80 and 390,107.60

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Solution

The fourth proportional to 1,336,641.20, 2,004,961.80 and 390,107.60 is: 585,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,641.20 : 2,004,961.80 = 390,107.60 : x
  2. Step 2: Convert to fraction form
    1,336,641.20/2,004,961.80 = 390,107.60/x
  3. Step 3: Cross multiply
    1,336,641.20x = 2,004,961.80 × 390,107.60
  4. Step 4: Simplify right side
    1,336,641.20x = 782,150,835,889.68
  5. Step 5: Solve for x
    x = 782,150,835,889.68/1,336,641.20
  6. Step 6: Final answer
    x = 585,161.40

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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.