Home / 396,121.86-545,934.33-288,521.46

Finding the Fourth Proportional to 396,121.86, 545,934.33 and 288,521.46

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Solution

The fourth proportional to 396,121.86, 545,934.33 and 288,521.46 is: 397,639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,121.86 : 545,934.33 = 288,521.46 : x
  2. Step 2: Convert to fraction form
    396,121.86/545,934.33 = 288,521.46/x
  3. Step 3: Cross multiply
    396,121.86x = 545,934.33 × 288,521.46
  4. Step 4: Simplify right side
    396,121.86x = 157,513,769,955.72
  5. Step 5: Solve for x
    x = 157,513,769,955.72/396,121.86
  6. Step 6: Final answer
    x = 397,639.68

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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.