Home / 1,297,647.90-1,789,758.90-780,863.04

Finding the Fourth Proportional to 1,297,647.90, 1,789,758.90 and 780,863.04

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Solution

The fourth proportional to 1,297,647.90, 1,789,758.90 and 780,863.04 is: 1,076,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,647.90 : 1,789,758.90 = 780,863.04 : x
  2. Step 2: Convert to fraction form
    1,297,647.90/1,789,758.90 = 780,863.04/x
  3. Step 3: Cross multiply
    1,297,647.90x = 1,789,758.90 × 780,863.04
  4. Step 4: Simplify right side
    1,297,647.90x = 1,397,556,575,521.06
  5. Step 5: Solve for x
    x = 1,397,556,575,521.06/1,297,647.90
  6. Step 6: Final answer
    x = 1,076,992.13

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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.