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Finding the Fourth Proportional to 1,310,492.78, 1,809,038.04 and 881,022

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Solution

The fourth proportional to 1,310,492.78, 1,809,038.04 and 881,022 is: 1,216,185.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,492.78 : 1,809,038.04 = 881,022 : x
  2. Step 2: Convert to fraction form
    1,310,492.78/1,809,038.04 = 881,022/x
  3. Step 3: Cross multiply
    1,310,492.78x = 1,809,038.04 × 881,022
  4. Step 4: Simplify right side
    1,310,492.78x = 1,593,802,312,076.88
  5. Step 5: Solve for x
    x = 1,593,802,312,076.88/1,310,492.78
  6. Step 6: Final answer
    x = 1,216,185.50

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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.