Home / 626,621.60-939,932.40-205,911.20

Finding the Fourth Proportional to 626,621.60, 939,932.40 and 205,911.20

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Solution

The fourth proportional to 626,621.60, 939,932.40 and 205,911.20 is: 308,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,621.60 : 939,932.40 = 205,911.20 : x
  2. Step 2: Convert to fraction form
    626,621.60/939,932.40 = 205,911.20/x
  3. Step 3: Cross multiply
    626,621.60x = 939,932.40 × 205,911.20
  4. Step 4: Simplify right side
    626,621.60x = 193,542,608,402.88
  5. Step 5: Solve for x
    x = 193,542,608,402.88/626,621.60
  6. Step 6: Final answer
    x = 308,866.80

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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.