Home / 866,485.40-1,299,728.10-446,581.40

Finding the Fourth Proportional to 866,485.40, 1,299,728.10 and 446,581.40

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Solution

The fourth proportional to 866,485.40, 1,299,728.10 and 446,581.40 is: 669,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,485.40 : 1,299,728.10 = 446,581.40 : x
  2. Step 2: Convert to fraction form
    866,485.40/1,299,728.10 = 446,581.40/x
  3. Step 3: Cross multiply
    866,485.40x = 1,299,728.10 × 446,581.40
  4. Step 4: Simplify right side
    866,485.40x = 580,434,394,517.34
  5. Step 5: Solve for x
    x = 580,434,394,517.34/866,485.40
  6. Step 6: Final answer
    x = 669,872.10

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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.