Home / 421,015,051.44-631,515,414.60-125,910,846

Finding the Fourth Proportional to 421,015,051.44, 631,515,414.60 and 125,910,846

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Solution

The fourth proportional to 421,015,051.44, 631,515,414.60 and 125,910,846 is: 188,864,126.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,015,051.44 : 631,515,414.60 = 125,910,846 : x
  2. Step 2: Convert to fraction form
    421,015,051.44/631,515,414.60 = 125,910,846/x
  3. Step 3: Cross multiply
    421,015,051.44x = 631,515,414.60 × 125,910,846
  4. Step 4: Simplify right side
    421,015,051.44x = 79,514,640,114,326,752
  5. Step 5: Solve for x
    x = 79,514,640,114,326,752/421,015,051.44
  6. Step 6: Final answer
    x = 188,864,126.93

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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.