Home / 426,365.28-639,678.24-255,776.04

Finding the Fourth Proportional to 426,365.28, 639,678.24 and 255,776.04

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Solution

The fourth proportional to 426,365.28, 639,678.24 and 255,776.04 is: 383,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,365.28 : 639,678.24 = 255,776.04 : x
  2. Step 2: Convert to fraction form
    426,365.28/639,678.24 = 255,776.04/x
  3. Step 3: Cross multiply
    426,365.28x = 639,678.24 × 255,776.04
  4. Step 4: Simplify right side
    426,365.28x = 163,614,367,101.37
  5. Step 5: Solve for x
    x = 163,614,367,101.37/426,365.28
  6. Step 6: Final answer
    x = 383,742.24

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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.