Home / 1,222,132.82-1,686,561.79-678,303.83

Finding the Fourth Proportional to 1,222,132.82, 1,686,561.79 and 678,303.83

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Solution

The fourth proportional to 1,222,132.82, 1,686,561.79 and 678,303.83 is: 936,069.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,132.82 : 1,686,561.79 = 678,303.83 : x
  2. Step 2: Convert to fraction form
    1,222,132.82/1,686,561.79 = 678,303.83/x
  3. Step 3: Cross multiply
    1,222,132.82x = 1,686,561.79 × 678,303.83
  4. Step 4: Simplify right side
    1,222,132.82x = 1,144,001,321,688.66
  5. Step 5: Solve for x
    x = 1,144,001,321,688.66/1,222,132.82
  6. Step 6: Final answer
    x = 936,069.55

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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.