Home / 783,077.36-1,080,389.76-438,863

Finding the Fourth Proportional to 783,077.36, 1,080,389.76 and 438,863

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Solution

The fourth proportional to 783,077.36, 1,080,389.76 and 438,863 is: 605,486.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,077.36 : 1,080,389.76 = 438,863 : x
  2. Step 2: Convert to fraction form
    783,077.36/1,080,389.76 = 438,863/x
  3. Step 3: Cross multiply
    783,077.36x = 1,080,389.76 × 438,863
  4. Step 4: Simplify right side
    783,077.36x = 474,143,091,242.88
  5. Step 5: Solve for x
    x = 474,143,091,242.88/783,077.36
  6. Step 6: Final answer
    x = 605,486.91

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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.