Home / 651,128.20-976,692.30-414,640.60

Finding the Fourth Proportional to 651,128.20, 976,692.30 and 414,640.60

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Solution

The fourth proportional to 651,128.20, 976,692.30 and 414,640.60 is: 621,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,128.20 : 976,692.30 = 414,640.60 : x
  2. Step 2: Convert to fraction form
    651,128.20/976,692.30 = 414,640.60/x
  3. Step 3: Cross multiply
    651,128.20x = 976,692.30 × 414,640.60
  4. Step 4: Simplify right side
    651,128.20x = 404,976,281,287.38
  5. Step 5: Solve for x
    x = 404,976,281,287.38/651,128.20
  6. Step 6: Final answer
    x = 621,960.90

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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.