Home / 280,929,891.60-421,394,837.40-275,190,328.80

Finding the Fourth Proportional to 280,929,891.60, 421,394,837.40 and 275,190,328.80

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Solution

The fourth proportional to 280,929,891.60, 421,394,837.40 and 275,190,328.80 is: 412,785,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,929,891.60 : 421,394,837.40 = 275,190,328.80 : x
  2. Step 2: Convert to fraction form
    280,929,891.60/421,394,837.40 = 275,190,328.80/x
  3. Step 3: Cross multiply
    280,929,891.60x = 421,394,837.40 × 275,190,328.80
  4. Step 4: Simplify right side
    280,929,891.60x = 115,963,783,858,728,528
  5. Step 5: Solve for x
    x = 115,963,783,858,728,528/280,929,891.60
  6. Step 6: Final answer
    x = 412,785,493.20

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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.