Home / 385,664.20-579,878.70-324,838.60

Finding the Fourth Proportional to 385,664.20, 579,878.70 and 324,838.60

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Solution

The fourth proportional to 385,664.20, 579,878.70 and 324,838.60 is: 488,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,664.20 : 579,878.70 = 324,838.60 : x
  2. Step 2: Convert to fraction form
    385,664.20/579,878.70 = 324,838.60/x
  3. Step 3: Cross multiply
    385,664.20x = 579,878.70 × 324,838.60
  4. Step 4: Simplify right side
    385,664.20x = 188,366,985,077.82
  5. Step 5: Solve for x
    x = 188,366,985,077.82/385,664.20
  6. Step 6: Final answer
    x = 488,422.27

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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.