Home / 808,534.20-1,212,801.30-509,352.60

Finding the Fourth Proportional to 808,534.20, 1,212,801.30 and 509,352.60

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Solution

The fourth proportional to 808,534.20, 1,212,801.30 and 509,352.60 is: 764,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,534.20 : 1,212,801.30 = 509,352.60 : x
  2. Step 2: Convert to fraction form
    808,534.20/1,212,801.30 = 509,352.60/x
  3. Step 3: Cross multiply
    808,534.20x = 1,212,801.30 × 509,352.60
  4. Step 4: Simplify right side
    808,534.20x = 617,743,495,438.38
  5. Step 5: Solve for x
    x = 617,743,495,438.38/808,534.20
  6. Step 6: Final answer
    x = 764,028.90

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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.