Home / 328,422,852.09-450,809,343.27-290,420,490.33

Finding the Fourth Proportional to 328,422,852.09, 450,809,343.27 and 290,420,490.33

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Solution

The fourth proportional to 328,422,852.09, 450,809,343.27 and 290,420,490.33 is: 398,645,434.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,422,852.09 : 450,809,343.27 = 290,420,490.33 : x
  2. Step 2: Convert to fraction form
    328,422,852.09/450,809,343.27 = 290,420,490.33/x
  3. Step 3: Cross multiply
    328,422,852.09x = 450,809,343.27 × 290,420,490.33
  4. Step 4: Simplify right side
    328,422,852.09x = 130,924,270,517,818,672
  5. Step 5: Solve for x
    x = 130,924,270,517,818,672/328,422,852.09
  6. Step 6: Final answer
    x = 398,645,434.34

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.