Home / 1,399,312.12-2,099,118.06-388,438.32

Finding the Fourth Proportional to 1,399,312.12, 2,099,118.06 and 388,438.32

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Solution

The fourth proportional to 1,399,312.12, 2,099,118.06 and 388,438.32 is: 582,699.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,312.12 : 2,099,118.06 = 388,438.32 : x
  2. Step 2: Convert to fraction form
    1,399,312.12/2,099,118.06 = 388,438.32/x
  3. Step 3: Cross multiply
    1,399,312.12x = 2,099,118.06 × 388,438.32
  4. Step 4: Simplify right side
    1,399,312.12x = 815,377,892,708.06
  5. Step 5: Solve for x
    x = 815,377,892,708.06/1,399,312.12
  6. Step 6: Final answer
    x = 582,699.09

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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.