Home / 783,072.36-1,080,382.86-438,858

Finding the Fourth Proportional to 783,072.36, 1,080,382.86 and 438,858

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Solution

The fourth proportional to 783,072.36, 1,080,382.86 and 438,858 is: 605,480.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,072.36 : 1,080,382.86 = 438,858 : x
  2. Step 2: Convert to fraction form
    783,072.36/1,080,382.86 = 438,858/x
  3. Step 3: Cross multiply
    783,072.36x = 1,080,382.86 × 438,858
  4. Step 4: Simplify right side
    783,072.36x = 474,134,661,173.88
  5. Step 5: Solve for x
    x = 474,134,661,173.88/783,072.36
  6. Step 6: Final answer
    x = 605,480.01

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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.