Home / 1,292,858,018.09-1,939,559,388.82-419,391,184.13

Finding the Fourth Proportional to 1,292,858,018.09, 1,939,559,388.82 and 419,391,184.13

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Solution

The fourth proportional to 1,292,858,018.09, 1,939,559,388.82 and 419,391,184.13 is: 629,175,127.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,858,018.09 : 1,939,559,388.82 = 419,391,184.13 : x
  2. Step 2: Convert to fraction form
    1,292,858,018.09/1,939,559,388.82 = 419,391,184.13/x
  3. Step 3: Cross multiply
    1,292,858,018.09x = 1,939,559,388.82 × 419,391,184.13
  4. Step 4: Simplify right side
    1,292,858,018.09x = 813,434,108,767,678,848
  5. Step 5: Solve for x
    x = 813,434,108,767,678,848/1,292,858,018.09
  6. Step 6: Final answer
    x = 629,175,127.81

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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.