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Finding the Fourth Proportional to 618,626.72, 853,664.48 and 363,928.72

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Solution

The fourth proportional to 618,626.72, 853,664.48 and 363,928.72 is: 502,197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,626.72 : 853,664.48 = 363,928.72 : x
  2. Step 2: Convert to fraction form
    618,626.72/853,664.48 = 363,928.72/x
  3. Step 3: Cross multiply
    618,626.72x = 853,664.48 × 363,928.72
  4. Step 4: Simplify right side
    618,626.72x = 310,673,021,515.87
  5. Step 5: Solve for x
    x = 310,673,021,515.87/618,626.72
  6. Step 6: Final answer
    x = 502,197.87

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1.5x scale

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.