Home / 1,905,400.76-2,629,385.01-1,078,456.57

Finding the Fourth Proportional to 1,905,400.76, 2,629,385.01 and 1,078,456.57

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Solution

The fourth proportional to 1,905,400.76, 2,629,385.01 and 1,078,456.57 is: 1,488,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905,400.76 : 2,629,385.01 = 1,078,456.57 : x
  2. Step 2: Convert to fraction form
    1,905,400.76/2,629,385.01 = 1,078,456.57/x
  3. Step 3: Cross multiply
    1,905,400.76x = 2,629,385.01 × 1,078,456.57
  4. Step 4: Simplify right side
    1,905,400.76x = 2,835,677,532,520.55
  5. Step 5: Solve for x
    x = 2,835,677,532,520.55/1,905,400.76
  6. Step 6: Final answer
    x = 1,488,231.56

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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.