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Finding the Fourth Proportional to 664,009,138.70, 996,013,708.05 and 654,939,212.30

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Solution

The fourth proportional to 664,009,138.70, 996,013,708.05 and 654,939,212.30 is: 982,408,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,009,138.70 : 996,013,708.05 = 654,939,212.30 : x
  2. Step 2: Convert to fraction form
    664,009,138.70/996,013,708.05 = 654,939,212.30/x
  3. Step 3: Cross multiply
    664,009,138.70x = 996,013,708.05 × 654,939,212.30
  4. Step 4: Simplify right side
    664,009,138.70x = 652,328,433,390,269,056
  5. Step 5: Solve for x
    x = 652,328,433,390,269,056/664,009,138.70
  6. Step 6: Final answer
    x = 982,408,818.45

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Similar ratio
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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.