Home / 427,610.07-641,838.74-379,890.95

Finding the Fourth Proportional to 427,610.07, 641,838.74 and 379,890.95

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Solution

The fourth proportional to 427,610.07, 641,838.74 and 379,890.95 is: 570,212.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,610.07 : 641,838.74 = 379,890.95 : x
  2. Step 2: Convert to fraction form
    427,610.07/641,838.74 = 379,890.95/x
  3. Step 3: Cross multiply
    427,610.07x = 641,838.74 × 379,890.95
  4. Step 4: Simplify right side
    427,610.07x = 243,828,723,576.76
  5. Step 5: Solve for x
    x = 243,828,723,576.76/427,610.07
  6. Step 6: Final answer
    x = 570,212.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.