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Finding the Fourth Proportional to 618,313.72, 853,231.98 and 342,653.08

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Solution

The fourth proportional to 618,313.72, 853,231.98 and 342,653.08 is: 472,838.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,313.72 : 853,231.98 = 342,653.08 : x
  2. Step 2: Convert to fraction form
    618,313.72/853,231.98 = 342,653.08/x
  3. Step 3: Cross multiply
    618,313.72x = 853,231.98 × 342,653.08
  4. Step 4: Simplify right side
    618,313.72x = 292,362,565,901.50
  5. Step 5: Solve for x
    x = 292,362,565,901.50/618,313.72
  6. Step 6: Final answer
    x = 472,838.56

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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.