Home / 426,558.39-640,002.15-305,116.17

Finding the Fourth Proportional to 426,558.39, 640,002.15 and 305,116.17

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Solution

The fourth proportional to 426,558.39, 640,002.15 and 305,116.17 is: 457,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,558.39 : 640,002.15 = 305,116.17 : x
  2. Step 2: Convert to fraction form
    426,558.39/640,002.15 = 305,116.17/x
  3. Step 3: Cross multiply
    426,558.39x = 640,002.15 × 305,116.17
  4. Step 4: Simplify right side
    426,558.39x = 195,275,004,799.77
  5. Step 5: Solve for x
    x = 195,275,004,799.77/426,558.39
  6. Step 6: Final answer
    x = 457,791.97

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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.