Home / 685,880.75-946,515.26-379,977.01

Finding the Fourth Proportional to 685,880.75, 946,515.26 and 379,977.01

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Solution

The fourth proportional to 685,880.75, 946,515.26 and 379,977.01 is: 524,368.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,880.75 : 946,515.26 = 379,977.01 : x
  2. Step 2: Convert to fraction form
    685,880.75/946,515.26 = 379,977.01/x
  3. Step 3: Cross multiply
    685,880.75x = 946,515.26 × 379,977.01
  4. Step 4: Simplify right side
    685,880.75x = 359,654,036,997.83
  5. Step 5: Solve for x
    x = 359,654,036,997.83/685,880.75
  6. Step 6: Final answer
    x = 524,368.17

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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.