Home / 891,369.28-1,336,922.40-260,113.60

Finding the Fourth Proportional to 891,369.28, 1,336,922.40 and 260,113.60

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Solution

The fourth proportional to 891,369.28, 1,336,922.40 and 260,113.60 is: 390,132.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,369.28 : 1,336,922.40 = 260,113.60 : x
  2. Step 2: Convert to fraction form
    891,369.28/1,336,922.40 = 260,113.60/x
  3. Step 3: Cross multiply
    891,369.28x = 1,336,922.40 × 260,113.60
  4. Step 4: Simplify right side
    891,369.28x = 347,751,698,384.64
  5. Step 5: Solve for x
    x = 347,751,698,384.64/891,369.28
  6. Step 6: Final answer
    x = 390,132.02

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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.