Home / 677,120.80-1,015,940.40-666,493.60

Finding the Fourth Proportional to 677,120.80, 1,015,940.40 and 666,493.60

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Solution

The fourth proportional to 677,120.80, 1,015,940.40 and 666,493.60 is: 999,995.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,120.80 : 1,015,940.40 = 666,493.60 : x
  2. Step 2: Convert to fraction form
    677,120.80/1,015,940.40 = 666,493.60/x
  3. Step 3: Cross multiply
    677,120.80x = 1,015,940.40 × 666,493.60
  4. Step 4: Simplify right side
    677,120.80x = 677,117,774,581.44
  5. Step 5: Solve for x
    x = 677,117,774,581.44/677,120.80
  6. Step 6: Final answer
    x = 999,995.53

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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.