Home / 866,436.60-1,299,630.60-393,121.20

Finding the Fourth Proportional to 866,436.60, 1,299,630.60 and 393,121.20

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Solution

The fourth proportional to 866,436.60, 1,299,630.60 and 393,121.20 is: 589,670.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,436.60 : 1,299,630.60 = 393,121.20 : x
  2. Step 2: Convert to fraction form
    866,436.60/1,299,630.60 = 393,121.20/x
  3. Step 3: Cross multiply
    866,436.60x = 1,299,630.60 × 393,121.20
  4. Step 4: Simplify right side
    866,436.60x = 510,912,341,028.72
  5. Step 5: Solve for x
    x = 510,912,341,028.72/866,436.60
  6. Step 6: Final answer
    x = 589,670.77

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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.