Home / 939,866.40-1,409,799.60-308,800.80

Finding the Fourth Proportional to 939,866.40, 1,409,799.60 and 308,800.80

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Solution

The fourth proportional to 939,866.40, 1,409,799.60 and 308,800.80 is: 463,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,866.40 : 1,409,799.60 = 308,800.80 : x
  2. Step 2: Convert to fraction form
    939,866.40/1,409,799.60 = 308,800.80/x
  3. Step 3: Cross multiply
    939,866.40x = 1,409,799.60 × 308,800.80
  4. Step 4: Simplify right side
    939,866.40x = 435,347,244,319.68
  5. Step 5: Solve for x
    x = 435,347,244,319.68/939,866.40
  6. Step 6: Final answer
    x = 463,201.20

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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.