Home / 1,355,208.25-1,870,153.68-774,394.53

Finding the Fourth Proportional to 1,355,208.25, 1,870,153.68 and 774,394.53

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Solution

The fourth proportional to 1,355,208.25, 1,870,153.68 and 774,394.53 is: 1,068,645.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,208.25 : 1,870,153.68 = 774,394.53 : x
  2. Step 2: Convert to fraction form
    1,355,208.25/1,870,153.68 = 774,394.53/x
  3. Step 3: Cross multiply
    1,355,208.25x = 1,870,153.68 × 774,394.53
  4. Step 4: Simplify right side
    1,355,208.25x = 1,448,236,775,942.27
  5. Step 5: Solve for x
    x = 1,448,236,775,942.27/1,355,208.25
  6. Step 6: Final answer
    x = 1,068,645.19

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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.