Home / 1,294,627.80-1,939,868.10-820,464.60

Finding the Fourth Proportional to 1,294,627.80, 1,939,868.10 and 820,464.60

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Solution

The fourth proportional to 1,294,627.80, 1,939,868.10 and 820,464.60 is: 1,229,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,627.80 : 1,939,868.10 = 820,464.60 : x
  2. Step 2: Convert to fraction form
    1,294,627.80/1,939,868.10 = 820,464.60/x
  3. Step 3: Cross multiply
    1,294,627.80x = 1,939,868.10 × 820,464.60
  4. Step 4: Simplify right side
    1,294,627.80x = 1,591,593,104,719.26
  5. Step 5: Solve for x
    x = 1,591,593,104,719.26/1,294,627.80
  6. Step 6: Final answer
    x = 1,229,382.77

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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.