Home / 5,321,818.40-7,983,764.40-2,126,400.80

Finding the Fourth Proportional to 5,321,818.40, 7,983,764.40 and 2,126,400.80

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Solution

The fourth proportional to 5,321,818.40, 7,983,764.40 and 2,126,400.80 is: 3,190,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321,818.40 : 7,983,764.40 = 2,126,400.80 : x
  2. Step 2: Convert to fraction form
    5,321,818.40/7,983,764.40 = 2,126,400.80/x
  3. Step 3: Cross multiply
    5,321,818.40x = 7,983,764.40 × 2,126,400.80
  4. Step 4: Simplify right side
    5,321,818.40x = 16,976,683,007,171.52
  5. Step 5: Solve for x
    x = 16,976,683,007,171.52/5,321,818.40
  6. Step 6: Final answer
    x = 3,190,015.47

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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.