Home / 1,121,912.58-1,681,868.52-411,775.86

Finding the Fourth Proportional to 1,121,912.58, 1,681,868.52 and 411,775.86

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Solution

The fourth proportional to 1,121,912.58, 1,681,868.52 and 411,775.86 is: 617,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,912.58 : 1,681,868.52 = 411,775.86 : x
  2. Step 2: Convert to fraction form
    1,121,912.58/1,681,868.52 = 411,775.86/x
  3. Step 3: Cross multiply
    1,121,912.58x = 1,681,868.52 × 411,775.86
  4. Step 4: Simplify right side
    1,121,912.58x = 692,552,856,229.93
  5. Step 5: Solve for x
    x = 692,552,856,229.93/1,121,912.58
  6. Step 6: Final answer
    x = 617,296.63

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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.