Home / 643,599,015.20-965,902,407.60-298,595,391.20

Finding the Fourth Proportional to 643,599,015.20, 965,902,407.60 and 298,595,391.20

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Solution

The fourth proportional to 643,599,015.20, 965,902,407.60 and 298,595,391.20 is: 448,126,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,599,015.20 : 965,902,407.60 = 298,595,391.20 : x
  2. Step 2: Convert to fraction form
    643,599,015.20/965,902,407.60 = 298,595,391.20/x
  3. Step 3: Cross multiply
    643,599,015.20x = 965,902,407.60 × 298,595,391.20
  4. Step 4: Simplify right side
    643,599,015.20x = 288,414,007,258,343,872
  5. Step 5: Solve for x
    x = 288,414,007,258,343,872/643,599,015.20
  6. Step 6: Final answer
    x = 448,126,862.30

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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.