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Finding the Fourth Proportional to 608,896.72, 912,645.24 and 408,975.76

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Solution

The fourth proportional to 608,896.72, 912,645.24 and 408,975.76 is: 612,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,896.72 : 912,645.24 = 408,975.76 : x
  2. Step 2: Convert to fraction form
    608,896.72/912,645.24 = 408,975.76/x
  3. Step 3: Cross multiply
    608,896.72x = 912,645.24 × 408,975.76
  4. Step 4: Simplify right side
    608,896.72x = 373,249,780,639.38
  5. Step 5: Solve for x
    x = 373,249,780,639.38/608,896.72
  6. Step 6: Final answer
    x = 612,993.58

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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.