Home / 1,270,721.56-1,905,659.47-512,367.16

Finding the Fourth Proportional to 1,270,721.56, 1,905,659.47 and 512,367.16

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Solution

The fourth proportional to 1,270,721.56, 1,905,659.47 and 512,367.16 is: 768,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,721.56 : 1,905,659.47 = 512,367.16 : x
  2. Step 2: Convert to fraction form
    1,270,721.56/1,905,659.47 = 512,367.16/x
  3. Step 3: Cross multiply
    1,270,721.56x = 1,905,659.47 × 512,367.16
  4. Step 4: Simplify right side
    1,270,721.56x = 976,397,319,761.79
  5. Step 5: Solve for x
    x = 976,397,319,761.79/1,270,721.56
  6. Step 6: Final answer
    x = 768,380.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.