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Finding the Fourth Proportional to 660,983.72, 912,157.62 and 359,177

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Solution

The fourth proportional to 660,983.72, 912,157.62 and 359,177 is: 495,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,983.72 : 912,157.62 = 359,177 : x
  2. Step 2: Convert to fraction form
    660,983.72/912,157.62 = 359,177/x
  3. Step 3: Cross multiply
    660,983.72x = 912,157.62 × 359,177
  4. Step 4: Simplify right side
    660,983.72x = 327,626,037,478.74
  5. Step 5: Solve for x
    x = 327,626,037,478.74/660,983.72
  6. Step 6: Final answer
    x = 495,664.31

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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.