Home / 389,621.55-584,450.55-123,402.90

Finding the Fourth Proportional to 389,621.55, 584,450.55 and 123,402.90

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Solution

The fourth proportional to 389,621.55, 584,450.55 and 123,402.90 is: 185,110.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,621.55 : 584,450.55 = 123,402.90 : x
  2. Step 2: Convert to fraction form
    389,621.55/584,450.55 = 123,402.90/x
  3. Step 3: Cross multiply
    389,621.55x = 584,450.55 × 123,402.90
  4. Step 4: Simplify right side
    389,621.55x = 72,122,892,776.60
  5. Step 5: Solve for x
    x = 72,122,892,776.60/389,621.55
  6. Step 6: Final answer
    x = 185,110.12

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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.