Home / 1,212,589.80-1,818,884.70-413,605.80

Finding the Fourth Proportional to 1,212,589.80, 1,818,884.70 and 413,605.80

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Solution

The fourth proportional to 1,212,589.80, 1,818,884.70 and 413,605.80 is: 620,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,589.80 : 1,818,884.70 = 413,605.80 : x
  2. Step 2: Convert to fraction form
    1,212,589.80/1,818,884.70 = 413,605.80/x
  3. Step 3: Cross multiply
    1,212,589.80x = 1,818,884.70 × 413,605.80
  4. Step 4: Simplify right side
    1,212,589.80x = 752,301,261,451.26
  5. Step 5: Solve for x
    x = 752,301,261,451.26/1,212,589.80
  6. Step 6: Final answer
    x = 620,408.70

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Double scale
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Similar ratio
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1.5x scale

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.