Home / 1,388,278-2,082,585.46-391,006

Finding the Fourth Proportional to 1,388,278, 2,082,585.46 and 391,006

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Solution

The fourth proportional to 1,388,278, 2,082,585.46 and 391,006 is: 586,556.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,278 : 2,082,585.46 = 391,006 : x
  2. Step 2: Convert to fraction form
    1,388,278/2,082,585.46 = 391,006/x
  3. Step 3: Cross multiply
    1,388,278x = 2,082,585.46 × 391,006
  4. Step 4: Simplify right side
    1,388,278x = 814,303,410,372.76
  5. Step 5: Solve for x
    x = 814,303,410,372.76/1,388,278
  6. Step 6: Final answer
    x = 586,556.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.