Home / 685,621.07-946,159.72-379,690.75

Finding the Fourth Proportional to 685,621.07, 946,159.72 and 379,690.75

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Solution

The fourth proportional to 685,621.07, 946,159.72 and 379,690.75 is: 523,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,621.07 : 946,159.72 = 379,690.75 : x
  2. Step 2: Convert to fraction form
    685,621.07/946,159.72 = 379,690.75/x
  3. Step 3: Cross multiply
    685,621.07x = 946,159.72 × 379,690.75
  4. Step 4: Simplify right side
    685,621.07x = 359,248,093,940.06
  5. Step 5: Solve for x
    x = 359,248,093,940.06/685,621.07
  6. Step 6: Final answer
    x = 523,974.70

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1.5x scale

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.