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Finding the Fourth Proportional to 618,346.83, 853,316.73 and 342,722.25

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Solution

The fourth proportional to 618,346.83, 853,316.73 and 342,722.25 is: 472,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,346.83 : 853,316.73 = 342,722.25 : x
  2. Step 2: Convert to fraction form
    618,346.83/853,316.73 = 342,722.25/x
  3. Step 3: Cross multiply
    618,346.83x = 853,316.73 × 342,722.25
  4. Step 4: Simplify right side
    618,346.83x = 292,450,629,668.24
  5. Step 5: Solve for x
    x = 292,450,629,668.24/618,346.83
  6. Step 6: Final answer
    x = 472,955.65

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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.