Home / 426,629.38-640,293.99-216,327.46

Finding the Fourth Proportional to 426,629.38, 640,293.99 and 216,327.46

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Solution

The fourth proportional to 426,629.38, 640,293.99 and 216,327.46 is: 324,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,629.38 : 640,293.99 = 216,327.46 : x
  2. Step 2: Convert to fraction form
    426,629.38/640,293.99 = 216,327.46/x
  3. Step 3: Cross multiply
    426,629.38x = 640,293.99 × 216,327.46
  4. Step 4: Simplify right side
    426,629.38x = 138,513,172,509.97
  5. Step 5: Solve for x
    x = 138,513,172,509.97/426,629.38
  6. Step 6: Final answer
    x = 324,668.62

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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.