Home / 1,295,128.20-1,942,692.30-408,664.20

Finding the Fourth Proportional to 1,295,128.20, 1,942,692.30 and 408,664.20

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Solution

The fourth proportional to 1,295,128.20, 1,942,692.30 and 408,664.20 is: 612,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,128.20 : 1,942,692.30 = 408,664.20 : x
  2. Step 2: Convert to fraction form
    1,295,128.20/1,942,692.30 = 408,664.20/x
  3. Step 3: Cross multiply
    1,295,128.20x = 1,942,692.30 × 408,664.20
  4. Step 4: Simplify right side
    1,295,128.20x = 793,908,794,625.66
  5. Step 5: Solve for x
    x = 793,908,794,625.66/1,295,128.20
  6. Step 6: Final answer
    x = 612,996.30

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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.