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Finding the Fourth Proportional to 458,535.20, 687,802.80 and 299,105.60

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Solution

The fourth proportional to 458,535.20, 687,802.80 and 299,105.60 is: 448,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,535.20 : 687,802.80 = 299,105.60 : x
  2. Step 2: Convert to fraction form
    458,535.20/687,802.80 = 299,105.60/x
  3. Step 3: Cross multiply
    458,535.20x = 687,802.80 × 299,105.60
  4. Step 4: Simplify right side
    458,535.20x = 205,725,669,175.68
  5. Step 5: Solve for x
    x = 205,725,669,175.68/458,535.20
  6. Step 6: Final answer
    x = 448,658.40

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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.