Home / 939,859.20-1,409,788.80-620,994.60

Finding the Fourth Proportional to 939,859.20, 1,409,788.80 and 620,994.60

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Solution

The fourth proportional to 939,859.20, 1,409,788.80 and 620,994.60 is: 931,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,859.20 : 1,409,788.80 = 620,994.60 : x
  2. Step 2: Convert to fraction form
    939,859.20/1,409,788.80 = 620,994.60/x
  3. Step 3: Cross multiply
    939,859.20x = 1,409,788.80 × 620,994.60
  4. Step 4: Simplify right side
    939,859.20x = 875,471,231,940.48
  5. Step 5: Solve for x
    x = 875,471,231,940.48/939,859.20
  6. Step 6: Final answer
    x = 931,491.90

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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.