Home / 1,317,824.20-1,976,736.30-785,945.80

Finding the Fourth Proportional to 1,317,824.20, 1,976,736.30 and 785,945.80

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Solution

The fourth proportional to 1,317,824.20, 1,976,736.30 and 785,945.80 is: 1,178,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,824.20 : 1,976,736.30 = 785,945.80 : x
  2. Step 2: Convert to fraction form
    1,317,824.20/1,976,736.30 = 785,945.80/x
  3. Step 3: Cross multiply
    1,317,824.20x = 1,976,736.30 × 785,945.80
  4. Step 4: Simplify right side
    1,317,824.20x = 1,553,607,592,692.54
  5. Step 5: Solve for x
    x = 1,553,607,592,692.54/1,317,824.20
  6. Step 6: Final answer
    x = 1,178,918.70

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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.