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Finding the Fourth Proportional to 483,688.48, 724,326 and 305,658.40

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Solution

The fourth proportional to 483,688.48, 724,326 and 305,658.40 is: 457,725.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,688.48 : 724,326 = 305,658.40 : x
  2. Step 2: Convert to fraction form
    483,688.48/724,326 = 305,658.40/x
  3. Step 3: Cross multiply
    483,688.48x = 724,326 × 305,658.40
  4. Step 4: Simplify right side
    483,688.48x = 221,396,326,238.40
  5. Step 5: Solve for x
    x = 221,396,326,238.40/483,688.48
  6. Step 6: Final answer
    x = 457,725.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.