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Finding the Fourth Proportional to 620,658.72, 856,606.32 and 366,037.92

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Solution

The fourth proportional to 620,658.72, 856,606.32 and 366,037.92 is: 505,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,658.72 : 856,606.32 = 366,037.92 : x
  2. Step 2: Convert to fraction form
    620,658.72/856,606.32 = 366,037.92/x
  3. Step 3: Cross multiply
    620,658.72x = 856,606.32 × 366,037.92
  4. Step 4: Simplify right side
    620,658.72x = 313,550,395,631.65
  5. Step 5: Solve for x
    x = 313,550,395,631.65/620,658.72
  6. Step 6: Final answer
    x = 505,189.70

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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.