Home / 1,102,143.60-1,653,846.12-428,137.56

Finding the Fourth Proportional to 1,102,143.60, 1,653,846.12 and 428,137.56

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Solution

The fourth proportional to 1,102,143.60, 1,653,846.12 and 428,137.56 is: 642,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,143.60 : 1,653,846.12 = 428,137.56 : x
  2. Step 2: Convert to fraction form
    1,102,143.60/1,653,846.12 = 428,137.56/x
  3. Step 3: Cross multiply
    1,102,143.60x = 1,653,846.12 × 428,137.56
  4. Step 4: Simplify right side
    1,102,143.60x = 708,073,642,432.27
  5. Step 5: Solve for x
    x = 708,073,642,432.27/1,102,143.60
  6. Step 6: Final answer
    x = 642,451.35

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Double scale
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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.