Home / 378,921,903.82-523,424,033.72-285,541,906.66

Finding the Fourth Proportional to 378,921,903.82, 523,424,033.72 and 285,541,906.66

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Solution

The fourth proportional to 378,921,903.82, 523,424,033.72 and 285,541,906.66 is: 394,433,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,921,903.82 : 523,424,033.72 = 285,541,906.66 : x
  2. Step 2: Convert to fraction form
    378,921,903.82/523,424,033.72 = 285,541,906.66/x
  3. Step 3: Cross multiply
    378,921,903.82x = 523,424,033.72 × 285,541,906.66
  4. Step 4: Simplify right side
    378,921,903.82x = 149,459,496,580,076,960
  5. Step 5: Solve for x
    x = 149,459,496,580,076,960/378,921,903.82
  6. Step 6: Final answer
    x = 394,433,510.11

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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.