Home / 685,143,349.37-945,472,504.49-371,870,837.30

Finding the Fourth Proportional to 685,143,349.37, 945,472,504.49 and 371,870,837.30

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Solution

The fourth proportional to 685,143,349.37, 945,472,504.49 and 371,870,837.30 is: 513,168,013.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,143,349.37 : 945,472,504.49 = 371,870,837.30 : x
  2. Step 2: Convert to fraction form
    685,143,349.37/945,472,504.49 = 371,870,837.30/x
  3. Step 3: Cross multiply
    685,143,349.37x = 945,472,504.49 × 371,870,837.30
  4. Step 4: Simplify right side
    685,143,349.37x = 351,593,651,882,237,632
  5. Step 5: Solve for x
    x = 351,593,651,882,237,632/685,143,349.37
  6. Step 6: Final answer
    x = 513,168,013.98

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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.