Home / 1,388,850.88-1,916,668.80-815,886.04

Finding the Fourth Proportional to 1,388,850.88, 1,916,668.80 and 815,886.04

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Solution

The fourth proportional to 1,388,850.88, 1,916,668.80 and 815,886.04 is: 1,125,954.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,850.88 : 1,916,668.80 = 815,886.04 : x
  2. Step 2: Convert to fraction form
    1,388,850.88/1,916,668.80 = 815,886.04/x
  3. Step 3: Cross multiply
    1,388,850.88x = 1,916,668.80 × 815,886.04
  4. Step 4: Simplify right side
    1,388,850.88x = 1,563,783,317,223.55
  5. Step 5: Solve for x
    x = 1,563,783,317,223.55/1,388,850.88
  6. Step 6: Final answer
    x = 1,125,954.80

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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.