Home / 385,630.20-579,827.70-324,804.60

Finding the Fourth Proportional to 385,630.20, 579,827.70 and 324,804.60

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Solution

The fourth proportional to 385,630.20, 579,827.70 and 324,804.60 is: 488,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,630.20 : 579,827.70 = 324,804.60 : x
  2. Step 2: Convert to fraction form
    385,630.20/579,827.70 = 324,804.60/x
  3. Step 3: Cross multiply
    385,630.20x = 579,827.70 × 324,804.60
  4. Step 4: Simplify right side
    385,630.20x = 188,330,704,167.42
  5. Step 5: Solve for x
    x = 188,330,704,167.42/385,630.20
  6. Step 6: Final answer
    x = 488,371.25

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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.