Home / 685,392.45-945,810.70-379,447.35

Finding the Fourth Proportional to 685,392.45, 945,810.70 and 379,447.35

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Solution

The fourth proportional to 685,392.45, 945,810.70 and 379,447.35 is: 523,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,392.45 : 945,810.70 = 379,447.35 : x
  2. Step 2: Convert to fraction form
    685,392.45/945,810.70 = 379,447.35/x
  3. Step 3: Cross multiply
    685,392.45x = 945,810.70 × 379,447.35
  4. Step 4: Simplify right side
    685,392.45x = 358,885,363,716.65
  5. Step 5: Solve for x
    x = 358,885,363,716.65/685,392.45
  6. Step 6: Final answer
    x = 523,620.25

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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.