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Finding the Fourth Proportional to 618,620.36, 853,756.02 and 346,734.44

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Solution

The fourth proportional to 618,620.36, 853,756.02 and 346,734.44 is: 478,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,620.36 : 853,756.02 = 346,734.44 : x
  2. Step 2: Convert to fraction form
    618,620.36/853,756.02 = 346,734.44/x
  3. Step 3: Cross multiply
    618,620.36x = 853,756.02 × 346,734.44
  4. Step 4: Simplify right side
    618,620.36x = 296,026,615,491.33
  5. Step 5: Solve for x
    x = 296,026,615,491.33/618,620.36
  6. Step 6: Final answer
    x = 478,527.11

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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.