Home / 813,163.86-1,122,190.75-450,553.80

Finding the Fourth Proportional to 813,163.86, 1,122,190.75 and 450,553.80

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Solution

The fourth proportional to 813,163.86, 1,122,190.75 and 450,553.80 is: 621,777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,163.86 : 1,122,190.75 = 450,553.80 : x
  2. Step 2: Convert to fraction form
    813,163.86/1,122,190.75 = 450,553.80/x
  3. Step 3: Cross multiply
    813,163.86x = 1,122,190.75 × 450,553.80
  4. Step 4: Simplify right side
    813,163.86x = 505,607,306,737.35
  5. Step 5: Solve for x
    x = 505,607,306,737.35/813,163.86
  6. Step 6: Final answer
    x = 621,777.89

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Half scale
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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.