Home / 458,533.20-687,799.80-299,103.60

Finding the Fourth Proportional to 458,533.20, 687,799.80 and 299,103.60

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Solution

The fourth proportional to 458,533.20, 687,799.80 and 299,103.60 is: 448,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,533.20 : 687,799.80 = 299,103.60 : x
  2. Step 2: Convert to fraction form
    458,533.20/687,799.80 = 299,103.60/x
  3. Step 3: Cross multiply
    458,533.20x = 687,799.80 × 299,103.60
  4. Step 4: Simplify right side
    458,533.20x = 205,723,396,259.28
  5. Step 5: Solve for x
    x = 205,723,396,259.28/458,533.20
  6. Step 6: Final answer
    x = 448,655.40

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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.