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Finding the Fourth Proportional to 389,622.60, 584,433.90 and 349,764.53

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Solution

The fourth proportional to 389,622.60, 584,433.90 and 349,764.53 is: 524,646.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,622.60 : 584,433.90 = 349,764.53 : x
  2. Step 2: Convert to fraction form
    389,622.60/584,433.90 = 349,764.53/x
  3. Step 3: Cross multiply
    389,622.60x = 584,433.90 × 349,764.53
  4. Step 4: Simplify right side
    389,622.60x = 204,414,245,427.40
  5. Step 5: Solve for x
    x = 204,414,245,427.40/389,622.60
  6. Step 6: Final answer
    x = 524,646.79

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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.