Home / 778,185.42-1,073,912.31-438,653.58

Finding the Fourth Proportional to 778,185.42, 1,073,912.31 and 438,653.58

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Solution

The fourth proportional to 778,185.42, 1,073,912.31 and 438,653.58 is: 605,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,185.42 : 1,073,912.31 = 438,653.58 : x
  2. Step 2: Convert to fraction form
    778,185.42/1,073,912.31 = 438,653.58/x
  3. Step 3: Cross multiply
    778,185.42x = 1,073,912.31 × 438,653.58
  4. Step 4: Simplify right side
    778,185.42x = 471,075,479,387.57
  5. Step 5: Solve for x
    x = 471,075,479,387.57/778,185.42
  6. Step 6: Final answer
    x = 605,351.20

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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.