Home / 685,093,772.94-945,430,342.92-371,827,991.76

Finding the Fourth Proportional to 685,093,772.94, 945,430,342.92 and 371,827,991.76

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Solution

The fourth proportional to 685,093,772.94, 945,430,342.92 and 371,827,991.76 is: 513,123,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,093,772.94 : 945,430,342.92 = 371,827,991.76 : x
  2. Step 2: Convert to fraction form
    685,093,772.94/945,430,342.92 = 371,827,991.76/x
  3. Step 3: Cross multiply
    685,093,772.94x = 945,430,342.92 × 371,827,991.76
  4. Step 4: Simplify right side
    685,093,772.94x = 351,537,465,756,911,680
  5. Step 5: Solve for x
    x = 351,537,465,756,911,680/685,093,772.94
  6. Step 6: Final answer
    x = 513,123,136.78

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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.