Home / 1,353,556.80-1,867,406.40-870,388.38

Finding the Fourth Proportional to 1,353,556.80, 1,867,406.40 and 870,388.38

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Solution

The fourth proportional to 1,353,556.80, 1,867,406.40 and 870,388.38 is: 1,200,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,556.80 : 1,867,406.40 = 870,388.38 : x
  2. Step 2: Convert to fraction form
    1,353,556.80/1,867,406.40 = 870,388.38/x
  3. Step 3: Cross multiply
    1,353,556.80x = 1,867,406.40 × 870,388.38
  4. Step 4: Simplify right side
    1,353,556.80x = 1,625,368,831,297.63
  5. Step 5: Solve for x
    x = 1,625,368,831,297.63/1,353,556.80
  6. Step 6: Final answer
    x = 1,200,813.17

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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.