Home / 681,071.36-939,884.64-379,271.36

Finding the Fourth Proportional to 681,071.36, 939,884.64 and 379,271.36

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Solution

The fourth proportional to 681,071.36, 939,884.64 and 379,271.36 is: 523,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,071.36 : 939,884.64 = 379,271.36 : x
  2. Step 2: Convert to fraction form
    681,071.36/939,884.64 = 379,271.36/x
  3. Step 3: Cross multiply
    681,071.36x = 939,884.64 × 379,271.36
  4. Step 4: Simplify right side
    681,071.36x = 356,471,325,655.91
  5. Step 5: Solve for x
    x = 356,471,325,655.91/681,071.36
  6. Step 6: Final answer
    x = 523,397.91

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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.