Home / 685,881.33-946,516.05-379,977.57

Finding the Fourth Proportional to 685,881.33, 946,516.05 and 379,977.57

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Solution

The fourth proportional to 685,881.33, 946,516.05 and 379,977.57 is: 524,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,881.33 : 946,516.05 = 379,977.57 : x
  2. Step 2: Convert to fraction form
    685,881.33/946,516.05 = 379,977.57/x
  3. Step 3: Cross multiply
    685,881.33x = 946,516.05 × 379,977.57
  4. Step 4: Simplify right side
    685,881.33x = 359,654,868,645.00
  5. Step 5: Solve for x
    x = 359,654,868,645.00/685,881.33
  6. Step 6: Final answer
    x = 524,368.94

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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.