Home / 389,705.38-584,575.10-123,485.52

Finding the Fourth Proportional to 389,705.38, 584,575.10 and 123,485.52

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Solution

The fourth proportional to 389,705.38, 584,575.10 and 123,485.52 is: 185,233.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,705.38 : 584,575.10 = 123,485.52 : x
  2. Step 2: Convert to fraction form
    389,705.38/584,575.10 = 123,485.52/x
  3. Step 3: Cross multiply
    389,705.38x = 584,575.10 × 123,485.52
  4. Step 4: Simplify right side
    389,705.38x = 72,186,560,202.55
  5. Step 5: Solve for x
    x = 72,186,560,202.55/389,705.38
  6. Step 6: Final answer
    x = 185,233.68

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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.