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Finding the Fourth Proportional to 863,404.40, 1,295,106.60 and 857,874.80

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Solution

The fourth proportional to 863,404.40, 1,295,106.60 and 857,874.80 is: 1,286,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,404.40 : 1,295,106.60 = 857,874.80 : x
  2. Step 2: Convert to fraction form
    863,404.40/1,295,106.60 = 857,874.80/x
  3. Step 3: Cross multiply
    863,404.40x = 1,295,106.60 × 857,874.80
  4. Step 4: Simplify right side
    863,404.40x = 1,111,039,315,453.68
  5. Step 5: Solve for x
    x = 1,111,039,315,453.68/863,404.40
  6. Step 6: Final answer
    x = 1,286,812.20

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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.