Home / 808,999.70-1,212,788.71-329,630.60

Finding the Fourth Proportional to 808,999.70, 1,212,788.71 and 329,630.60

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Solution

The fourth proportional to 808,999.70, 1,212,788.71 and 329,630.60 is: 494,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,999.70 : 1,212,788.71 = 329,630.60 : x
  2. Step 2: Convert to fraction form
    808,999.70/1,212,788.71 = 329,630.60/x
  3. Step 3: Cross multiply
    808,999.70x = 1,212,788.71 × 329,630.60
  4. Step 4: Simplify right side
    808,999.70x = 399,772,272,358.42
  5. Step 5: Solve for x
    x = 399,772,272,358.42/808,999.70
  6. Step 6: Final answer
    x = 494,156.27

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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.