Home / 1,079,631,140.61-1,620,198,485.09-380,179,615.43

Finding the Fourth Proportional to 1,079,631,140.61, 1,620,198,485.09 and 380,179,615.43

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Solution

The fourth proportional to 1,079,631,140.61, 1,620,198,485.09 and 380,179,615.43 is: 570,534,151.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,631,140.61 : 1,620,198,485.09 = 380,179,615.43 : x
  2. Step 2: Convert to fraction form
    1,079,631,140.61/1,620,198,485.09 = 380,179,615.43/x
  3. Step 3: Cross multiply
    1,079,631,140.61x = 1,620,198,485.09 × 380,179,615.43
  4. Step 4: Simplify right side
    1,079,631,140.61x = 615,966,436,977,858,560
  5. Step 5: Solve for x
    x = 615,966,436,977,858,560/1,079,631,140.61
  6. Step 6: Final answer
    x = 570,534,151.72

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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.