Home / 420,139,040.60-629,783,408.10-247,527,003.80

Finding the Fourth Proportional to 420,139,040.60, 629,783,408.10 and 247,527,003.80

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Solution

The fourth proportional to 420,139,040.60, 629,783,408.10 and 247,527,003.80 is: 371,040,024.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,139,040.60 : 629,783,408.10 = 247,527,003.80 : x
  2. Step 2: Convert to fraction form
    420,139,040.60/629,783,408.10 = 247,527,003.80/x
  3. Step 3: Cross multiply
    420,139,040.60x = 629,783,408.10 × 247,527,003.80
  4. Step 4: Simplify right side
    420,139,040.60x = 155,888,400,049,945,664
  5. Step 5: Solve for x
    x = 155,888,400,049,945,664/420,139,040.60
  6. Step 6: Final answer
    x = 371,040,024.81

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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.