Home / 782,943.78-1,080,538.27-438,838.17

Finding the Fourth Proportional to 782,943.78, 1,080,538.27 and 438,838.17

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Solution

The fourth proportional to 782,943.78, 1,080,538.27 and 438,838.17 is: 605,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,943.78 : 1,080,538.27 = 438,838.17 : x
  2. Step 2: Convert to fraction form
    782,943.78/1,080,538.27 = 438,838.17/x
  3. Step 3: Cross multiply
    782,943.78x = 1,080,538.27 × 438,838.17
  4. Step 4: Simplify right side
    782,943.78x = 474,181,431,872.65
  5. Step 5: Solve for x
    x = 474,181,431,872.65/782,943.78
  6. Step 6: Final answer
    x = 605,639.18

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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.