Home / 1,399,310.56-2,099,115.80-388,436.76

Finding the Fourth Proportional to 1,399,310.56, 2,099,115.80 and 388,436.76

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Solution

The fourth proportional to 1,399,310.56, 2,099,115.80 and 388,436.76 is: 582,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,310.56 : 2,099,115.80 = 388,436.76 : x
  2. Step 2: Convert to fraction form
    1,399,310.56/2,099,115.80 = 388,436.76/x
  3. Step 3: Cross multiply
    1,399,310.56x = 2,099,115.80 × 388,436.76
  4. Step 4: Simplify right side
    1,399,310.56x = 815,373,740,216.81
  5. Step 5: Solve for x
    x = 815,373,740,216.81/1,399,310.56
  6. Step 6: Final answer
    x = 582,696.77

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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.