Home / 8,380,903,782.15-12,561,003,906.84-7,192,128,225.45

Finding the Fourth Proportional to 8,380,903,782.15, 12,561,003,906.84 and 7,192,128,225.45

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Solution

The fourth proportional to 8,380,903,782.15, 12,561,003,906.84 and 7,192,128,225.45 is: 10,779,308,901.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380,903,782.15 : 12,561,003,906.84 = 7,192,128,225.45 : x
  2. Step 2: Convert to fraction form
    8,380,903,782.15/12,561,003,906.84 = 7,192,128,225.45/x
  3. Step 3: Cross multiply
    8,380,903,782.15x = 12,561,003,906.84 × 7,192,128,225.45
  4. Step 4: Simplify right side
    8,380,903,782.15x = 90,340,350,738,371,690,496
  5. Step 5: Solve for x
    x = 90,340,350,738,371,690,496/8,380,903,782.15
  6. Step 6: Final answer
    x = 10,779,308,901.12

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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.