Home / 8,380,903,785.15-12,561,003,911.34-7,192,128,228.45

Finding the Fourth Proportional to 8,380,903,785.15, 12,561,003,911.34 and 7,192,128,228.45

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Solution

The fourth proportional to 8,380,903,785.15, 12,561,003,911.34 and 7,192,128,228.45 is: 10,779,308,905.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380,903,785.15 : 12,561,003,911.34 = 7,192,128,228.45 : x
  2. Step 2: Convert to fraction form
    8,380,903,785.15/12,561,003,911.34 = 7,192,128,228.45/x
  3. Step 3: Cross multiply
    8,380,903,785.15x = 12,561,003,911.34 × 7,192,128,228.45
  4. Step 4: Simplify right side
    8,380,903,785.15x = 90,340,350,808,419,270,656
  5. Step 5: Solve for x
    x = 90,340,350,808,419,270,656/8,380,903,785.15
  6. Step 6: Final answer
    x = 10,779,308,905.62

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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.