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Finding the Fourth Proportional to 660,982.72, 912,156.24 and 359,176

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Solution

The fourth proportional to 660,982.72, 912,156.24 and 359,176 is: 495,662.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,982.72 : 912,156.24 = 359,176 : x
  2. Step 2: Convert to fraction form
    660,982.72/912,156.24 = 359,176/x
  3. Step 3: Cross multiply
    660,982.72x = 912,156.24 × 359,176
  4. Step 4: Simplify right side
    660,982.72x = 327,624,629,658.24
  5. Step 5: Solve for x
    x = 327,624,629,658.24/660,982.72
  6. Step 6: Final answer
    x = 495,662.93

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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.