Home / 626,620.20-939,930.30-311,692.20

Finding the Fourth Proportional to 626,620.20, 939,930.30 and 311,692.20

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Solution

The fourth proportional to 626,620.20, 939,930.30 and 311,692.20 is: 467,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,620.20 : 939,930.30 = 311,692.20 : x
  2. Step 2: Convert to fraction form
    626,620.20/939,930.30 = 311,692.20/x
  3. Step 3: Cross multiply
    626,620.20x = 939,930.30 × 311,692.20
  4. Step 4: Simplify right side
    626,620.20x = 292,968,943,053.66
  5. Step 5: Solve for x
    x = 292,968,943,053.66/626,620.20
  6. Step 6: Final answer
    x = 467,538.30

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Half scale
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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.