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Finding the Fourth Proportional to 591,086.40, 885,317.40 and 486,110.40

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Solution

The fourth proportional to 591,086.40, 885,317.40 and 486,110.40 is: 728,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,086.40 : 885,317.40 = 486,110.40 : x
  2. Step 2: Convert to fraction form
    591,086.40/885,317.40 = 486,110.40/x
  3. Step 3: Cross multiply
    591,086.40x = 885,317.40 × 486,110.40
  4. Step 4: Simplify right side
    591,086.40x = 430,361,995,440.96
  5. Step 5: Solve for x
    x = 430,361,995,440.96/591,086.40
  6. Step 6: Final answer
    x = 728,086.44

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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.