Home / 1,207,128.20-1,810,692.30-320,664.20

Finding the Fourth Proportional to 1,207,128.20, 1,810,692.30 and 320,664.20

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Solution

The fourth proportional to 1,207,128.20, 1,810,692.30 and 320,664.20 is: 480,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,128.20 : 1,810,692.30 = 320,664.20 : x
  2. Step 2: Convert to fraction form
    1,207,128.20/1,810,692.30 = 320,664.20/x
  3. Step 3: Cross multiply
    1,207,128.20x = 1,810,692.30 × 320,664.20
  4. Step 4: Simplify right side
    1,207,128.20x = 580,624,197,825.66
  5. Step 5: Solve for x
    x = 580,624,197,825.66/1,207,128.20
  6. Step 6: Final answer
    x = 480,996.30

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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.