Home / 426,880.60-639,629.70-268,826.20

Finding the Fourth Proportional to 426,880.60, 639,629.70 and 268,826.20

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Solution

The fourth proportional to 426,880.60, 639,629.70 and 268,826.20 is: 402,804.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,880.60 : 639,629.70 = 268,826.20 : x
  2. Step 2: Convert to fraction form
    426,880.60/639,629.70 = 268,826.20/x
  3. Step 3: Cross multiply
    426,880.60x = 639,629.70 × 268,826.20
  4. Step 4: Simplify right side
    426,880.60x = 171,949,221,658.14
  5. Step 5: Solve for x
    x = 171,949,221,658.14/426,880.60
  6. Step 6: Final answer
    x = 402,804.02

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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.