Home / 1,281,705.80-1,920,485.10-807,542.60

Finding the Fourth Proportional to 1,281,705.80, 1,920,485.10 and 807,542.60

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Solution

The fourth proportional to 1,281,705.80, 1,920,485.10 and 807,542.60 is: 1,210,007.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,705.80 : 1,920,485.10 = 807,542.60 : x
  2. Step 2: Convert to fraction form
    1,281,705.80/1,920,485.10 = 807,542.60/x
  3. Step 3: Cross multiply
    1,281,705.80x = 1,920,485.10 × 807,542.60
  4. Step 4: Simplify right side
    1,281,705.80x = 1,550,873,530,915.26
  5. Step 5: Solve for x
    x = 1,550,873,530,915.26/1,281,705.80
  6. Step 6: Final answer
    x = 1,210,007.42

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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.