Home / 1,210,249.56-1,670,185.80-666,422.85

Finding the Fourth Proportional to 1,210,249.56, 1,670,185.80 and 666,422.85

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Solution

The fourth proportional to 1,210,249.56, 1,670,185.80 and 666,422.85 is: 919,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,249.56 : 1,670,185.80 = 666,422.85 : x
  2. Step 2: Convert to fraction form
    1,210,249.56/1,670,185.80 = 666,422.85/x
  3. Step 3: Cross multiply
    1,210,249.56x = 1,670,185.80 × 666,422.85
  4. Step 4: Simplify right side
    1,210,249.56x = 1,113,049,980,865.53
  5. Step 5: Solve for x
    x = 1,113,049,980,865.53/1,210,249.56
  6. Step 6: Final answer
    x = 919,686.33

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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.