Home / 519,556,920.82-779,328,878.37-126,087,006.36

Finding the Fourth Proportional to 519,556,920.82, 779,328,878.37 and 126,087,006.36

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Solution

The fourth proportional to 519,556,920.82, 779,328,878.37 and 126,087,006.36 is: 189,128,931.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,556,920.82 : 779,328,878.37 = 126,087,006.36 : x
  2. Step 2: Convert to fraction form
    519,556,920.82/779,328,878.37 = 126,087,006.36/x
  3. Step 3: Cross multiply
    519,556,920.82x = 779,328,878.37 × 126,087,006.36
  4. Step 4: Simplify right side
    519,556,920.82x = 98,263,245,243,569,856
  5. Step 5: Solve for x
    x = 98,263,245,243,569,856/519,556,920.82
  6. Step 6: Final answer
    x = 189,128,931.41

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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.