Home / 1,328,603,978.80-1,992,905,968.20-454,914,974.80

Finding the Fourth Proportional to 1,328,603,978.80, 1,992,905,968.20 and 454,914,974.80

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Solution

The fourth proportional to 1,328,603,978.80, 1,992,905,968.20 and 454,914,974.80 is: 682,372,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,603,978.80 : 1,992,905,968.20 = 454,914,974.80 : x
  2. Step 2: Convert to fraction form
    1,328,603,978.80/1,992,905,968.20 = 454,914,974.80/x
  3. Step 3: Cross multiply
    1,328,603,978.80x = 1,992,905,968.20 × 454,914,974.80
  4. Step 4: Simplify right side
    1,328,603,978.80x = 906,602,768,302,472,704
  5. Step 5: Solve for x
    x = 906,602,768,302,472,704/1,328,603,978.80
  6. Step 6: Final answer
    x = 682,372,462.20

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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.