Home / 1,905,405.63-2,629,391.75-1,078,461.45

Finding the Fourth Proportional to 1,905,405.63, 2,629,391.75 and 1,078,461.45

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Solution

The fourth proportional to 1,905,405.63, 2,629,391.75 and 1,078,461.45 is: 1,488,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905,405.63 : 2,629,391.75 = 1,078,461.45 : x
  2. Step 2: Convert to fraction form
    1,905,405.63/2,629,391.75 = 1,078,461.45/x
  3. Step 3: Cross multiply
    1,905,405.63x = 2,629,391.75 × 1,078,461.45
  4. Step 4: Simplify right side
    1,905,405.63x = 2,835,697,633,930.73
  5. Step 5: Solve for x
    x = 2,835,697,633,930.73/1,905,405.63
  6. Step 6: Final answer
    x = 1,488,238.30

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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.