Home / 919,570.72-1,268,590.80-664,517.92

Finding the Fourth Proportional to 919,570.72, 1,268,590.80 and 664,517.92

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Solution

The fourth proportional to 919,570.72, 1,268,590.80 and 664,517.92 is: 916,733.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,570.72 : 1,268,590.80 = 664,517.92 : x
  2. Step 2: Convert to fraction form
    919,570.72/1,268,590.80 = 664,517.92/x
  3. Step 3: Cross multiply
    919,570.72x = 1,268,590.80 × 664,517.92
  4. Step 4: Simplify right side
    919,570.72x = 843,001,319,747.14
  5. Step 5: Solve for x
    x = 843,001,319,747.14/919,570.72
  6. Step 6: Final answer
    x = 916,733.54

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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.