Home / 428,230.07-590,689.94-275,467.21

Finding the Fourth Proportional to 428,230.07, 590,689.94 and 275,467.21

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Solution

The fourth proportional to 428,230.07, 590,689.94 and 275,467.21 is: 379,972.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,230.07 : 590,689.94 = 275,467.21 : x
  2. Step 2: Convert to fraction form
    428,230.07/590,689.94 = 275,467.21/x
  3. Step 3: Cross multiply
    428,230.07x = 590,689.94 × 275,467.21
  4. Step 4: Simplify right side
    428,230.07x = 162,715,706,892.81
  5. Step 5: Solve for x
    x = 162,715,706,892.81/428,230.07
  6. Step 6: Final answer
    x = 379,972.63

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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.