Home / 685,124,438.81-945,472,425.29-371,858,717.37

Finding the Fourth Proportional to 685,124,438.81, 945,472,425.29 and 371,858,717.37

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Solution

The fourth proportional to 685,124,438.81, 945,472,425.29 and 371,858,717.37 is: 513,165,409.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,124,438.81 : 945,472,425.29 = 371,858,717.37 : x
  2. Step 2: Convert to fraction form
    685,124,438.81/945,472,425.29 = 371,858,717.37/x
  3. Step 3: Cross multiply
    685,124,438.81x = 945,472,425.29 × 371,858,717.37
  4. Step 4: Simplify right side
    685,124,438.81x = 351,582,163,377,042,560
  5. Step 5: Solve for x
    x = 351,582,163,377,042,560/685,124,438.81
  6. Step 6: Final answer
    x = 513,165,409.76

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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.