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Finding the Fourth Proportional to 486,243.63, 670,213.02 and 325,039.86

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Solution

The fourth proportional to 486,243.63, 670,213.02 and 325,039.86 is: 448,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,243.63 : 670,213.02 = 325,039.86 : x
  2. Step 2: Convert to fraction form
    486,243.63/670,213.02 = 325,039.86/x
  3. Step 3: Cross multiply
    486,243.63x = 670,213.02 × 325,039.86
  4. Step 4: Simplify right side
    486,243.63x = 217,845,946,190.98
  5. Step 5: Solve for x
    x = 217,845,946,190.98/486,243.63
  6. Step 6: Final answer
    x = 448,018.10

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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.