Home / 813,208.92-1,122,234.95-450,638.85

Finding the Fourth Proportional to 813,208.92, 1,122,234.95 and 450,638.85

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Solution

The fourth proportional to 813,208.92, 1,122,234.95 and 450,638.85 is: 621,885.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,208.92 : 1,122,234.95 = 450,638.85 : x
  2. Step 2: Convert to fraction form
    813,208.92/1,122,234.95 = 450,638.85/x
  3. Step 3: Cross multiply
    813,208.92x = 1,122,234.95 × 450,638.85
  4. Step 4: Simplify right side
    813,208.92x = 505,722,665,044.61
  5. Step 5: Solve for x
    x = 505,722,665,044.61/813,208.92
  6. Step 6: Final answer
    x = 621,885.29

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.