Home / 5,187,176.20-7,782,125.10-1,992,406.60

Finding the Fourth Proportional to 5,187,176.20, 7,782,125.10 and 1,992,406.60

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Solution

The fourth proportional to 5,187,176.20, 7,782,125.10 and 1,992,406.60 is: 2,989,132.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187,176.20 : 7,782,125.10 = 1,992,406.60 : x
  2. Step 2: Convert to fraction form
    5,187,176.20/7,782,125.10 = 1,992,406.60/x
  3. Step 3: Cross multiply
    5,187,176.20x = 7,782,125.10 × 1,992,406.60
  4. Step 4: Simplify right side
    5,187,176.20x = 15,505,157,411,265.66
  5. Step 5: Solve for x
    x = 15,505,157,411,265.66/5,187,176.20
  6. Step 6: Final answer
    x = 2,989,132.59

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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.