Home / 685,836.74-946,462.28-379,917.81

Finding the Fourth Proportional to 685,836.74, 946,462.28 and 379,917.81

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Solution

The fourth proportional to 685,836.74, 946,462.28 and 379,917.81 is: 524,290.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,836.74 : 946,462.28 = 379,917.81 : x
  2. Step 2: Convert to fraction form
    685,836.74/946,462.28 = 379,917.81/x
  3. Step 3: Cross multiply
    685,836.74x = 946,462.28 × 379,917.81
  4. Step 4: Simplify right side
    685,836.74x = 359,577,874,765.62
  5. Step 5: Solve for x
    x = 359,577,874,765.62/685,836.74
  6. Step 6: Final answer
    x = 524,290.77

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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.