Home / 389,629.05-584,461.80-123,410.40

Finding the Fourth Proportional to 389,629.05, 584,461.80 and 123,410.40

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Solution

The fourth proportional to 389,629.05, 584,461.80 and 123,410.40 is: 185,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,629.05 : 584,461.80 = 123,410.40 : x
  2. Step 2: Convert to fraction form
    389,629.05/584,461.80 = 123,410.40/x
  3. Step 3: Cross multiply
    389,629.05x = 584,461.80 × 123,410.40
  4. Step 4: Simplify right side
    389,629.05x = 72,128,664,522.72
  5. Step 5: Solve for x
    x = 72,128,664,522.72/389,629.05
  6. Step 6: Final answer
    x = 185,121.37

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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.