Home / 519,556,919.82-779,328,876.87-126,087,005.36

Finding the Fourth Proportional to 519,556,919.82, 779,328,876.87 and 126,087,005.36

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Solution

The fourth proportional to 519,556,919.82, 779,328,876.87 and 126,087,005.36 is: 189,128,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,556,919.82 : 779,328,876.87 = 126,087,005.36 : x
  2. Step 2: Convert to fraction form
    519,556,919.82/779,328,876.87 = 126,087,005.36/x
  3. Step 3: Cross multiply
    519,556,919.82x = 779,328,876.87 × 126,087,005.36
  4. Step 4: Simplify right side
    519,556,919.82x = 98,263,244,271,213,824
  5. Step 5: Solve for x
    x = 98,263,244,271,213,824/519,556,919.82
  6. Step 6: Final answer
    x = 189,128,929.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.