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Finding the Fourth Proportional to 1,888,446.48, 2,605,974.64 and 1,072,647.62

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Solution

The fourth proportional to 1,888,446.48, 2,605,974.64 and 1,072,647.62 is: 1,480,207.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,446.48 : 2,605,974.64 = 1,072,647.62 : x
  2. Step 2: Convert to fraction form
    1,888,446.48/2,605,974.64 = 1,072,647.62/x
  3. Step 3: Cross multiply
    1,888,446.48x = 2,605,974.64 × 1,072,647.62
  4. Step 4: Simplify right side
    1,888,446.48x = 2,795,292,495,376.36
  5. Step 5: Solve for x
    x = 2,795,292,495,376.36/1,888,446.48
  6. Step 6: Final answer
    x = 1,480,207.42

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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.