Home / 885,905.60-1,328,858.40-412,638.80

Finding the Fourth Proportional to 885,905.60, 1,328,858.40 and 412,638.80

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Solution

The fourth proportional to 885,905.60, 1,328,858.40 and 412,638.80 is: 618,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,905.60 : 1,328,858.40 = 412,638.80 : x
  2. Step 2: Convert to fraction form
    885,905.60/1,328,858.40 = 412,638.80/x
  3. Step 3: Cross multiply
    885,905.60x = 1,328,858.40 × 412,638.80
  4. Step 4: Simplify right side
    885,905.60x = 548,338,535,545.92
  5. Step 5: Solve for x
    x = 548,338,535,545.92/885,905.60
  6. Step 6: Final answer
    x = 618,958.20

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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.