Home / 863,400.40-1,295,100.60-857,870.80

Finding the Fourth Proportional to 863,400.40, 1,295,100.60 and 857,870.80

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Solution

The fourth proportional to 863,400.40, 1,295,100.60 and 857,870.80 is: 1,286,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,400.40 : 1,295,100.60 = 857,870.80 : x
  2. Step 2: Convert to fraction form
    863,400.40/1,295,100.60 = 857,870.80/x
  3. Step 3: Cross multiply
    863,400.40x = 1,295,100.60 × 857,870.80
  4. Step 4: Simplify right side
    863,400.40x = 1,111,028,987,802.48
  5. Step 5: Solve for x
    x = 1,111,028,987,802.48/863,400.40
  6. Step 6: Final answer
    x = 1,286,806.20

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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.