Home / 685,105,949.48-945,447,095.58-371,840,127.80

Finding the Fourth Proportional to 685,105,949.48, 945,447,095.58 and 371,840,127.80

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Solution

The fourth proportional to 685,105,949.48, 945,447,095.58 and 371,840,127.80 is: 513,139,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,105,949.48 : 945,447,095.58 = 371,840,127.80 : x
  2. Step 2: Convert to fraction form
    685,105,949.48/945,447,095.58 = 371,840,127.80/x
  3. Step 3: Cross multiply
    685,105,949.48x = 945,447,095.58 × 371,840,127.80
  4. Step 4: Simplify right side
    685,105,949.48x = 351,555,168,848,606,016
  5. Step 5: Solve for x
    x = 351,555,168,848,606,016/685,105,949.48
  6. Step 6: Final answer
    x = 513,139,856.86

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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.