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Finding the Fourth Proportional to 1,443,914.87, 1,992,811.01 and 831,950.37

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Solution

The fourth proportional to 1,443,914.87, 1,992,811.01 and 831,950.37 is: 1,148,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,914.87 : 1,992,811.01 = 831,950.37 : x
  2. Step 2: Convert to fraction form
    1,443,914.87/1,992,811.01 = 831,950.37/x
  3. Step 3: Cross multiply
    1,443,914.87x = 1,992,811.01 × 831,950.37
  4. Step 4: Simplify right side
    1,443,914.87x = 1,657,919,852,949.82
  5. Step 5: Solve for x
    x = 1,657,919,852,949.82/1,443,914.87
  6. Step 6: Final answer
    x = 1,148,211.64

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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.