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Finding the Fourth Proportional to 1,579,599.89, 2,179,834.25 and 891,276.87

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Solution

The fourth proportional to 1,579,599.89, 2,179,834.25 and 891,276.87 is: 1,229,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579,599.89 : 2,179,834.25 = 891,276.87 : x
  2. Step 2: Convert to fraction form
    1,579,599.89/2,179,834.25 = 891,276.87/x
  3. Step 3: Cross multiply
    1,579,599.89x = 2,179,834.25 × 891,276.87
  4. Step 4: Simplify right side
    1,579,599.89x = 1,942,835,856,190.22
  5. Step 5: Solve for x
    x = 1,942,835,856,190.22/1,579,599.89
  6. Step 6: Final answer
    x = 1,229,954.41

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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.