Home / 1,907,171,401.70-2,860,757,102.55-1,390,610,749.70

Finding the Fourth Proportional to 1,907,171,401.70, 2,860,757,102.55 and 1,390,610,749.70

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Solution

The fourth proportional to 1,907,171,401.70, 2,860,757,102.55 and 1,390,610,749.70 is: 2,085,916,124.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907,171,401.70 : 2,860,757,102.55 = 1,390,610,749.70 : x
  2. Step 2: Convert to fraction form
    1,907,171,401.70/2,860,757,102.55 = 1,390,610,749.70/x
  3. Step 3: Cross multiply
    1,907,171,401.70x = 2,860,757,102.55 × 1,390,610,749.70
  4. Step 4: Simplify right side
    1,907,171,401.70x = 3,978,199,579,086,655,488
  5. Step 5: Solve for x
    x = 3,978,199,579,086,655,488/1,907,171,401.70
  6. Step 6: Final answer
    x = 2,085,916,124.55

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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.