Home / 643,599,013.20-965,902,404.60-298,595,389.20

Finding the Fourth Proportional to 643,599,013.20, 965,902,404.60 and 298,595,389.20

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Solution

The fourth proportional to 643,599,013.20, 965,902,404.60 and 298,595,389.20 is: 448,126,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,599,013.20 : 965,902,404.60 = 298,595,389.20 : x
  2. Step 2: Convert to fraction form
    643,599,013.20/965,902,404.60 = 298,595,389.20/x
  3. Step 3: Cross multiply
    643,599,013.20x = 965,902,404.60 × 298,595,389.20
  4. Step 4: Simplify right side
    643,599,013.20x = 288,414,004,430,752,896
  5. Step 5: Solve for x
    x = 288,414,004,430,752,896/643,599,013.20
  6. Step 6: Final answer
    x = 448,126,859.30

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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.