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Finding the Fourth Proportional to 618,356.94, 853,138.86 and 346,388.10

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Solution

The fourth proportional to 618,356.94, 853,138.86 and 346,388.10 is: 477,907.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,356.94 : 853,138.86 = 346,388.10 : x
  2. Step 2: Convert to fraction form
    618,356.94/853,138.86 = 346,388.10/x
  3. Step 3: Cross multiply
    618,356.94x = 853,138.86 × 346,388.10
  4. Step 4: Simplify right side
    618,356.94x = 295,517,148,751.57
  5. Step 5: Solve for x
    x = 295,517,148,751.57/618,356.94
  6. Step 6: Final answer
    x = 477,907.06

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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.