Home / 458,515.20-687,772.80-299,085.60

Finding the Fourth Proportional to 458,515.20, 687,772.80 and 299,085.60

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Solution

The fourth proportional to 458,515.20, 687,772.80 and 299,085.60 is: 448,628.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,515.20 : 687,772.80 = 299,085.60 : x
  2. Step 2: Convert to fraction form
    458,515.20/687,772.80 = 299,085.60/x
  3. Step 3: Cross multiply
    458,515.20x = 687,772.80 × 299,085.60
  4. Step 4: Simplify right side
    458,515.20x = 205,702,940,551.68
  5. Step 5: Solve for x
    x = 205,702,940,551.68/458,515.20
  6. Step 6: Final answer
    x = 448,628.40

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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.