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Finding the Fourth Proportional to 620,535.84, 856,391.04 and 365,936.64

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Solution

The fourth proportional to 620,535.84, 856,391.04 and 365,936.64 is: 505,022.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,535.84 : 856,391.04 = 365,936.64 : x
  2. Step 2: Convert to fraction form
    620,535.84/856,391.04 = 365,936.64/x
  3. Step 3: Cross multiply
    620,535.84x = 856,391.04 × 365,936.64
  4. Step 4: Simplify right side
    620,535.84x = 313,384,859,703.71
  5. Step 5: Solve for x
    x = 313,384,859,703.71/620,535.84
  6. Step 6: Final answer
    x = 505,022.98

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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.