Home / 1,429,517,408.51-2,144,399,631.78-394,378,289.48

Finding the Fourth Proportional to 1,429,517,408.51, 2,144,399,631.78 and 394,378,289.48

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Solution

The fourth proportional to 1,429,517,408.51, 2,144,399,631.78 and 394,378,289.48 is: 591,601,510.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,517,408.51 : 2,144,399,631.78 = 394,378,289.48 : x
  2. Step 2: Convert to fraction form
    1,429,517,408.51/2,144,399,631.78 = 394,378,289.48/x
  3. Step 3: Cross multiply
    1,429,517,408.51x = 2,144,399,631.78 × 394,378,289.48
  4. Step 4: Simplify right side
    1,429,517,408.51x = 845,704,658,742,938,240
  5. Step 5: Solve for x
    x = 845,704,658,742,938,240/1,429,517,408.51
  6. Step 6: Final answer
    x = 591,601,510.91

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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.