Home / 1,326,623.33-1,990,325.42-428,048.21

Finding the Fourth Proportional to 1,326,623.33, 1,990,325.42 and 428,048.21

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Solution

The fourth proportional to 1,326,623.33, 1,990,325.42 and 428,048.21 is: 642,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,623.33 : 1,990,325.42 = 428,048.21 : x
  2. Step 2: Convert to fraction form
    1,326,623.33/1,990,325.42 = 428,048.21/x
  3. Step 3: Cross multiply
    1,326,623.33x = 1,990,325.42 × 428,048.21
  4. Step 4: Simplify right side
    1,326,623.33x = 851,955,221,256.63
  5. Step 5: Solve for x
    x = 851,955,221,256.63/1,326,623.33
  6. Step 6: Final answer
    x = 642,198.28

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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.