Home / 1,907,171,391.20-2,860,757,086.80-1,390,610,739.20

Finding the Fourth Proportional to 1,907,171,391.20, 2,860,757,086.80 and 1,390,610,739.20

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Solution

The fourth proportional to 1,907,171,391.20, 2,860,757,086.80 and 1,390,610,739.20 is: 2,085,916,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907,171,391.20 : 2,860,757,086.80 = 1,390,610,739.20 : x
  2. Step 2: Convert to fraction form
    1,907,171,391.20/2,860,757,086.80 = 1,390,610,739.20/x
  3. Step 3: Cross multiply
    1,907,171,391.20x = 2,860,757,086.80 × 1,390,610,739.20
  4. Step 4: Simplify right side
    1,907,171,391.20x = 3,978,199,527,146,587,136
  5. Step 5: Solve for x
    x = 3,978,199,527,146,587,136/1,907,171,391.20
  6. Step 6: Final answer
    x = 2,085,916,108.80

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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.