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Finding the Fourth Proportional to 1,321,476.82, 1,824,515.69 and 1,015,005.22

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Solution

The fourth proportional to 1,321,476.82, 1,824,515.69 and 1,015,005.22 is: 1,401,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,476.82 : 1,824,515.69 = 1,015,005.22 : x
  2. Step 2: Convert to fraction form
    1,321,476.82/1,824,515.69 = 1,015,005.22/x
  3. Step 3: Cross multiply
    1,321,476.82x = 1,824,515.69 × 1,015,005.22
  4. Step 4: Simplify right side
    1,321,476.82x = 1,851,892,939,685.59
  5. Step 5: Solve for x
    x = 1,851,892,939,685.59/1,321,476.82
  6. Step 6: Final answer
    x = 1,401,381.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.