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Finding the Fourth Proportional to 911,960.51, 1,367,202.20 and 379,879.81

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Solution

The fourth proportional to 911,960.51, 1,367,202.20 and 379,879.81 is: 569,512.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,960.51 : 1,367,202.20 = 379,879.81 : x
  2. Step 2: Convert to fraction form
    911,960.51/1,367,202.20 = 379,879.81/x
  3. Step 3: Cross multiply
    911,960.51x = 1,367,202.20 × 379,879.81
  4. Step 4: Simplify right side
    911,960.51x = 519,372,506,650.18
  5. Step 5: Solve for x
    x = 519,372,506,650.18/911,960.51
  6. Step 6: Final answer
    x = 569,512.06

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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.