Home / 1,619,323.43-2,428,988.21-421,243.83

Finding the Fourth Proportional to 1,619,323.43, 2,428,988.21 and 421,243.83

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Solution

The fourth proportional to 1,619,323.43, 2,428,988.21 and 421,243.83 is: 631,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,323.43 : 2,428,988.21 = 421,243.83 : x
  2. Step 2: Convert to fraction form
    1,619,323.43/2,428,988.21 = 421,243.83/x
  3. Step 3: Cross multiply
    1,619,323.43x = 2,428,988.21 × 421,243.83
  4. Step 4: Simplify right side
    1,619,323.43x = 1,023,196,296,605.24
  5. Step 5: Solve for x
    x = 1,023,196,296,605.24/1,619,323.43
  6. Step 6: Final answer
    x = 631,866.54

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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.