Home / 839,484,418.80-1,259,388,028.80-321,874,492.80

Finding the Fourth Proportional to 839,484,418.80, 1,259,388,028.80 and 321,874,492.80

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Solution

The fourth proportional to 839,484,418.80, 1,259,388,028.80 and 321,874,492.80 is: 482,873,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,484,418.80 : 1,259,388,028.80 = 321,874,492.80 : x
  2. Step 2: Convert to fraction form
    839,484,418.80/1,259,388,028.80 = 321,874,492.80/x
  3. Step 3: Cross multiply
    839,484,418.80x = 1,259,388,028.80 × 321,874,492.80
  4. Step 4: Simplify right side
    839,484,418.80x = 405,364,883,008,391,808
  5. Step 5: Solve for x
    x = 405,364,883,008,391,808/839,484,418.80
  6. Step 6: Final answer
    x = 482,873,623.30

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1.5x scale

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.