Home / 727,576.12-1,004,054.42-421,830

Finding the Fourth Proportional to 727,576.12, 1,004,054.42 and 421,830

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Solution

The fourth proportional to 727,576.12, 1,004,054.42 and 421,830 is: 582,125.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,576.12 : 1,004,054.42 = 421,830 : x
  2. Step 2: Convert to fraction form
    727,576.12/1,004,054.42 = 421,830/x
  3. Step 3: Cross multiply
    727,576.12x = 1,004,054.42 × 421,830
  4. Step 4: Simplify right side
    727,576.12x = 423,540,275,988.60
  5. Step 5: Solve for x
    x = 423,540,275,988.60/727,576.12
  6. Step 6: Final answer
    x = 582,125.04

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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.