Home / 809,277.40-1,212,458.10-387,623.80

Finding the Fourth Proportional to 809,277.40, 1,212,458.10 and 387,623.80

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Solution

The fourth proportional to 809,277.40, 1,212,458.10 and 387,623.80 is: 580,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,277.40 : 1,212,458.10 = 387,623.80 : x
  2. Step 2: Convert to fraction form
    809,277.40/1,212,458.10 = 387,623.80/x
  3. Step 3: Cross multiply
    809,277.40x = 1,212,458.10 × 387,623.80
  4. Step 4: Simplify right side
    809,277.40x = 469,977,616,062.78
  5. Step 5: Solve for x
    x = 469,977,616,062.78/809,277.40
  6. Step 6: Final answer
    x = 580,737.35

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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.