Home / 866,831.10-1,300,250.70-305,865.60

Finding the Fourth Proportional to 866,831.10, 1,300,250.70 and 305,865.60

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Solution

The fourth proportional to 866,831.10, 1,300,250.70 and 305,865.60 is: 458,799.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,831.10 : 1,300,250.70 = 305,865.60 : x
  2. Step 2: Convert to fraction form
    866,831.10/1,300,250.70 = 305,865.60/x
  3. Step 3: Cross multiply
    866,831.10x = 1,300,250.70 × 305,865.60
  4. Step 4: Simplify right side
    866,831.10x = 397,701,960,505.92
  5. Step 5: Solve for x
    x = 397,701,960,505.92/866,831.10
  6. Step 6: Final answer
    x = 458,799.83

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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.