Home / 811,888.98-1,120,408.92-449,337.84

Finding the Fourth Proportional to 811,888.98, 1,120,408.92 and 449,337.84

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Solution

The fourth proportional to 811,888.98, 1,120,408.92 and 449,337.84 is: 620,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,888.98 : 1,120,408.92 = 449,337.84 : x
  2. Step 2: Convert to fraction form
    811,888.98/1,120,408.92 = 449,337.84/x
  3. Step 3: Cross multiply
    811,888.98x = 1,120,408.92 × 449,337.84
  4. Step 4: Simplify right side
    811,888.98x = 503,442,124,029.53
  5. Step 5: Solve for x
    x = 503,442,124,029.53/811,888.98
  6. Step 6: Final answer
    x = 620,087.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.