Home / 939,810.20-1,409,715.30-308,571.80

Finding the Fourth Proportional to 939,810.20, 1,409,715.30 and 308,571.80

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Solution

The fourth proportional to 939,810.20, 1,409,715.30 and 308,571.80 is: 462,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,810.20 : 1,409,715.30 = 308,571.80 : x
  2. Step 2: Convert to fraction form
    939,810.20/1,409,715.30 = 308,571.80/x
  3. Step 3: Cross multiply
    939,810.20x = 1,409,715.30 × 308,571.80
  4. Step 4: Simplify right side
    939,810.20x = 434,998,387,608.54
  5. Step 5: Solve for x
    x = 434,998,387,608.54/939,810.20
  6. Step 6: Final answer
    x = 462,857.70

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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.