Home / 413,923.69-620,975.13-125,711.72

Finding the Fourth Proportional to 413,923.69, 620,975.13 and 125,711.72

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Solution

The fourth proportional to 413,923.69, 620,975.13 and 125,711.72 is: 188,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,923.69 : 620,975.13 = 125,711.72 : x
  2. Step 2: Convert to fraction form
    413,923.69/620,975.13 = 125,711.72/x
  3. Step 3: Cross multiply
    413,923.69x = 620,975.13 × 125,711.72
  4. Step 4: Simplify right side
    413,923.69x = 78,063,851,669.52
  5. Step 5: Solve for x
    x = 78,063,851,669.52/413,923.69
  6. Step 6: Final answer
    x = 188,594.79

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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.