Home / 891,004.40-1,336,812.60-260,010.80

Finding the Fourth Proportional to 891,004.40, 1,336,812.60 and 260,010.80

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Solution

The fourth proportional to 891,004.40, 1,336,812.60 and 260,010.80 is: 390,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,004.40 : 1,336,812.60 = 260,010.80 : x
  2. Step 2: Convert to fraction form
    891,004.40/1,336,812.60 = 260,010.80/x
  3. Step 3: Cross multiply
    891,004.40x = 1,336,812.60 × 260,010.80
  4. Step 4: Simplify right side
    891,004.40x = 347,585,713,576.08
  5. Step 5: Solve for x
    x = 347,585,713,576.08/891,004.40
  6. Step 6: Final answer
    x = 390,105.50

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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.