Home / 1,387,779.89-1,915,209.36-843,825.60

Finding the Fourth Proportional to 1,387,779.89, 1,915,209.36 and 843,825.60

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Solution

The fourth proportional to 1,387,779.89, 1,915,209.36 and 843,825.60 is: 1,164,523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,779.89 : 1,915,209.36 = 843,825.60 : x
  2. Step 2: Convert to fraction form
    1,387,779.89/1,915,209.36 = 843,825.60/x
  3. Step 3: Cross multiply
    1,387,779.89x = 1,915,209.36 × 843,825.60
  4. Step 4: Simplify right side
    1,387,779.89x = 1,616,102,687,327.62
  5. Step 5: Solve for x
    x = 1,616,102,687,327.62/1,387,779.89
  6. Step 6: Final answer
    x = 1,164,523.79

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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.