Home / 1,086,520.50-1,629,811.57-287,802.11

Finding the Fourth Proportional to 1,086,520.50, 1,629,811.57 and 287,802.11

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Solution

The fourth proportional to 1,086,520.50, 1,629,811.57 and 287,802.11 is: 431,711.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,520.50 : 1,629,811.57 = 287,802.11 : x
  2. Step 2: Convert to fraction form
    1,086,520.50/1,629,811.57 = 287,802.11/x
  3. Step 3: Cross multiply
    1,086,520.50x = 1,629,811.57 × 287,802.11
  4. Step 4: Simplify right side
    1,086,520.50x = 469,063,208,748.41
  5. Step 5: Solve for x
    x = 469,063,208,748.41/1,086,520.50
  6. Step 6: Final answer
    x = 431,711.33

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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.