Home / 808,760.80-1,213,400.40-542,821.60

Finding the Fourth Proportional to 808,760.80, 1,213,400.40 and 542,821.60

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Solution

The fourth proportional to 808,760.80, 1,213,400.40 and 542,821.60 is: 814,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,760.80 : 1,213,400.40 = 542,821.60 : x
  2. Step 2: Convert to fraction form
    808,760.80/1,213,400.40 = 542,821.60/x
  3. Step 3: Cross multiply
    808,760.80x = 1,213,400.40 × 542,821.60
  4. Step 4: Simplify right side
    808,760.80x = 658,659,946,568.64
  5. Step 5: Solve for x
    x = 658,659,946,568.64/808,760.80
  6. Step 6: Final answer
    x = 814,406.37

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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.