Home / 1,286,666.85-1,775,813.13-713,891.55

Finding the Fourth Proportional to 1,286,666.85, 1,775,813.13 and 713,891.55

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Solution

The fourth proportional to 1,286,666.85, 1,775,813.13 and 713,891.55 is: 985,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,666.85 : 1,775,813.13 = 713,891.55 : x
  2. Step 2: Convert to fraction form
    1,286,666.85/1,775,813.13 = 713,891.55/x
  3. Step 3: Cross multiply
    1,286,666.85x = 1,775,813.13 × 713,891.55
  4. Step 4: Simplify right side
    1,286,666.85x = 1,267,737,987,886.05
  5. Step 5: Solve for x
    x = 1,267,737,987,886.05/1,286,666.85
  6. Step 6: Final answer
    x = 985,288.45

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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.