Home / 809,615.80-1,212,479.70-434,812.60

Finding the Fourth Proportional to 809,615.80, 1,212,479.70 and 434,812.60

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Solution

The fourth proportional to 809,615.80, 1,212,479.70 and 434,812.60 is: 651,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,615.80 : 1,212,479.70 = 434,812.60 : x
  2. Step 2: Convert to fraction form
    809,615.80/1,212,479.70 = 434,812.60/x
  3. Step 3: Cross multiply
    809,615.80x = 1,212,479.70 × 434,812.60
  4. Step 4: Simplify right side
    809,615.80x = 527,201,450,804.22
  5. Step 5: Solve for x
    x = 527,201,450,804.22/809,615.80
  6. Step 6: Final answer
    x = 651,174.85

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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.