Home / 685,930.86-946,591.23-380,013.75

Finding the Fourth Proportional to 685,930.86, 946,591.23 and 380,013.75

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Solution

The fourth proportional to 685,930.86, 946,591.23 and 380,013.75 is: 524,422.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,930.86 : 946,591.23 = 380,013.75 : x
  2. Step 2: Convert to fraction form
    685,930.86/946,591.23 = 380,013.75/x
  3. Step 3: Cross multiply
    685,930.86x = 946,591.23 × 380,013.75
  4. Step 4: Simplify right side
    685,930.86x = 359,717,683,029.41
  5. Step 5: Solve for x
    x = 359,717,683,029.41/685,930.86
  6. Step 6: Final answer
    x = 524,422.66

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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.