Home / 1,391,049.11-1,917,762.95-1,189,267.58

Finding the Fourth Proportional to 1,391,049.11, 1,917,762.95 and 1,189,267.58

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Solution

The fourth proportional to 1,391,049.11, 1,917,762.95 and 1,189,267.58 is: 1,639,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,049.11 : 1,917,762.95 = 1,189,267.58 : x
  2. Step 2: Convert to fraction form
    1,391,049.11/1,917,762.95 = 1,189,267.58/x
  3. Step 3: Cross multiply
    1,391,049.11x = 1,917,762.95 × 1,189,267.58
  4. Step 4: Simplify right side
    1,391,049.11x = 2,280,733,310,327.74
  5. Step 5: Solve for x
    x = 2,280,733,310,327.74/1,391,049.11
  6. Step 6: Final answer
    x = 1,639,577.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.