Home / 1,221,439.80-1,685,597.04-677,611.20

Finding the Fourth Proportional to 1,221,439.80, 1,685,597.04 and 677,611.20

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Solution

The fourth proportional to 1,221,439.80, 1,685,597.04 and 677,611.20 is: 935,109.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,439.80 : 1,685,597.04 = 677,611.20 : x
  2. Step 2: Convert to fraction form
    1,221,439.80/1,685,597.04 = 677,611.20/x
  3. Step 3: Cross multiply
    1,221,439.80x = 1,685,597.04 × 677,611.20
  4. Step 4: Simplify right side
    1,221,439.80x = 1,142,179,432,990.85
  5. Step 5: Solve for x
    x = 1,142,179,432,990.85/1,221,439.80
  6. Step 6: Final answer
    x = 935,109.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.