Home / 685,790.83-946,381.35-379,866.21

Finding the Fourth Proportional to 685,790.83, 946,381.35 and 379,866.21

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Solution

The fourth proportional to 685,790.83, 946,381.35 and 379,866.21 is: 524,209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,790.83 : 946,381.35 = 379,866.21 : x
  2. Step 2: Convert to fraction form
    685,790.83/946,381.35 = 379,866.21/x
  3. Step 3: Cross multiply
    685,790.83x = 946,381.35 × 379,866.21
  4. Step 4: Simplify right side
    685,790.83x = 359,498,295,214.69
  5. Step 5: Solve for x
    x = 359,498,295,214.69/685,790.83
  6. Step 6: Final answer
    x = 524,209.83

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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.