Home / 1,355,890.79-1,870,665.83-774,696.90

Finding the Fourth Proportional to 1,355,890.79, 1,870,665.83 and 774,696.90

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Solution

The fourth proportional to 1,355,890.79, 1,870,665.83 and 774,696.90 is: 1,068,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,890.79 : 1,870,665.83 = 774,696.90 : x
  2. Step 2: Convert to fraction form
    1,355,890.79/1,870,665.83 = 774,696.90/x
  3. Step 3: Cross multiply
    1,355,890.79x = 1,870,665.83 × 774,696.90
  4. Step 4: Simplify right side
    1,355,890.79x = 1,449,199,015,563.44
  5. Step 5: Solve for x
    x = 1,449,199,015,563.44/1,355,890.79
  6. Step 6: Final answer
    x = 1,068,816.92

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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.