Home / 426,150.80-639,226.20-398,502.80

Finding the Fourth Proportional to 426,150.80, 639,226.20 and 398,502.80

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Solution

The fourth proportional to 426,150.80, 639,226.20 and 398,502.80 is: 597,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,150.80 : 639,226.20 = 398,502.80 : x
  2. Step 2: Convert to fraction form
    426,150.80/639,226.20 = 398,502.80/x
  3. Step 3: Cross multiply
    426,150.80x = 639,226.20 × 398,502.80
  4. Step 4: Simplify right side
    426,150.80x = 254,733,430,533.36
  5. Step 5: Solve for x
    x = 254,733,430,533.36/426,150.80
  6. Step 6: Final answer
    x = 597,754.20

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Similar ratio
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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.