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Finding the Fourth Proportional to 558,480.77, 770,971.15 and 343,804.85

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Solution

The fourth proportional to 558,480.77, 770,971.15 and 343,804.85 is: 474,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,480.77 : 770,971.15 = 343,804.85 : x
  2. Step 2: Convert to fraction form
    558,480.77/770,971.15 = 343,804.85/x
  3. Step 3: Cross multiply
    558,480.77x = 770,971.15 × 343,804.85
  4. Step 4: Simplify right side
    558,480.77x = 265,063,623,367.02
  5. Step 5: Solve for x
    x = 265,063,623,367.02/558,480.77
  6. Step 6: Final answer
    x = 474,615.49

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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.