Home / 1,292,858,255.79-1,939,559,745.51-419,391,421.83

Finding the Fourth Proportional to 1,292,858,255.79, 1,939,559,745.51 and 419,391,421.83

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Solution

The fourth proportional to 1,292,858,255.79, 1,939,559,745.51 and 419,391,421.83 is: 629,175,484.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,858,255.79 : 1,939,559,745.51 = 419,391,421.83 : x
  2. Step 2: Convert to fraction form
    1,292,858,255.79/1,939,559,745.51 = 419,391,421.83/x
  3. Step 3: Cross multiply
    1,292,858,255.79x = 1,939,559,745.51 × 419,391,421.83
  4. Step 4: Simplify right side
    1,292,858,255.79x = 813,434,719,393,671,808
  5. Step 5: Solve for x
    x = 813,434,719,393,671,808/1,292,858,255.79
  6. Step 6: Final answer
    x = 629,175,484.44

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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.