Home / 644,243.21-888,912.46-389,588.93

Finding the Fourth Proportional to 644,243.21, 888,912.46 and 389,588.93

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Solution

The fourth proportional to 644,243.21, 888,912.46 and 389,588.93 is: 537,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,243.21 : 888,912.46 = 389,588.93 : x
  2. Step 2: Convert to fraction form
    644,243.21/888,912.46 = 389,588.93/x
  3. Step 3: Cross multiply
    644,243.21x = 888,912.46 × 389,588.93
  4. Step 4: Simplify right side
    644,243.21x = 346,310,454,155.07
  5. Step 5: Solve for x
    x = 346,310,454,155.07/644,243.21
  6. Step 6: Final answer
    x = 537,546.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.