Home / 426,548.88-639,585.18-268,438.50

Finding the Fourth Proportional to 426,548.88, 639,585.18 and 268,438.50

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Solution

The fourth proportional to 426,548.88, 639,585.18 and 268,438.50 is: 402,507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,548.88 : 639,585.18 = 268,438.50 : x
  2. Step 2: Convert to fraction form
    426,548.88/639,585.18 = 268,438.50/x
  3. Step 3: Cross multiply
    426,548.88x = 639,585.18 × 268,438.50
  4. Step 4: Simplify right side
    426,548.88x = 171,689,286,341.43
  5. Step 5: Solve for x
    x = 171,689,286,341.43/426,548.88
  6. Step 6: Final answer
    x = 402,507.88

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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.