Home / 426,944.10-639,724.95-268,889.70

Finding the Fourth Proportional to 426,944.10, 639,724.95 and 268,889.70

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Solution

The fourth proportional to 426,944.10, 639,724.95 and 268,889.70 is: 402,899.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,944.10 : 639,724.95 = 268,889.70 : x
  2. Step 2: Convert to fraction form
    426,944.10/639,724.95 = 268,889.70/x
  3. Step 3: Cross multiply
    426,944.10x = 639,724.95 × 268,889.70
  4. Step 4: Simplify right side
    426,944.10x = 172,015,449,888.02
  5. Step 5: Solve for x
    x = 172,015,449,888.02/426,944.10
  6. Step 6: Final answer
    x = 402,899.23

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1.5x scale

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.