Home / 912,109.20-1,368,163.80-281,216.40

Finding the Fourth Proportional to 912,109.20, 1,368,163.80 and 281,216.40

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Solution

The fourth proportional to 912,109.20, 1,368,163.80 and 281,216.40 is: 421,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,109.20 : 1,368,163.80 = 281,216.40 : x
  2. Step 2: Convert to fraction form
    912,109.20/1,368,163.80 = 281,216.40/x
  3. Step 3: Cross multiply
    912,109.20x = 1,368,163.80 × 281,216.40
  4. Step 4: Simplify right side
    912,109.20x = 384,750,098,446.32
  5. Step 5: Solve for x
    x = 384,750,098,446.32/912,109.20
  6. Step 6: Final answer
    x = 421,824.60

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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.