Home / 1,081,121.04-1,490,104.78-989,492.22

Finding the Fourth Proportional to 1,081,121.04, 1,490,104.78 and 989,492.22

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Solution

The fourth proportional to 1,081,121.04, 1,490,104.78 and 989,492.22 is: 1,363,813.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,121.04 : 1,490,104.78 = 989,492.22 : x
  2. Step 2: Convert to fraction form
    1,081,121.04/1,490,104.78 = 989,492.22/x
  3. Step 3: Cross multiply
    1,081,121.04x = 1,490,104.78 × 989,492.22
  4. Step 4: Simplify right side
    1,081,121.04x = 1,474,447,084,321.08
  5. Step 5: Solve for x
    x = 1,474,447,084,321.08/1,081,121.04
  6. Step 6: Final answer
    x = 1,363,813.14

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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.