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Finding the Fourth Proportional to 550,922.40, 826,383.60 and 486,640.80

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Solution

The fourth proportional to 550,922.40, 826,383.60 and 486,640.80 is: 729,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,922.40 : 826,383.60 = 486,640.80 : x
  2. Step 2: Convert to fraction form
    550,922.40/826,383.60 = 486,640.80/x
  3. Step 3: Cross multiply
    550,922.40x = 826,383.60 × 486,640.80
  4. Step 4: Simplify right side
    550,922.40x = 402,151,976,210.88
  5. Step 5: Solve for x
    x = 402,151,976,210.88/550,922.40
  6. Step 6: Final answer
    x = 729,961.20

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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.