Home / 1,278,840.20-1,915,733.10-829,873.40

Finding the Fourth Proportional to 1,278,840.20, 1,915,733.10 and 829,873.40

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Solution

The fourth proportional to 1,278,840.20, 1,915,733.10 and 829,873.40 is: 1,243,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,840.20 : 1,915,733.10 = 829,873.40 : x
  2. Step 2: Convert to fraction form
    1,278,840.20/1,915,733.10 = 829,873.40/x
  3. Step 3: Cross multiply
    1,278,840.20x = 1,915,733.10 × 829,873.40
  4. Step 4: Simplify right side
    1,278,840.20x = 1,589,815,941,189.54
  5. Step 5: Solve for x
    x = 1,589,815,941,189.54/1,278,840.20
  6. Step 6: Final answer
    x = 1,243,170.13

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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.