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Finding the Fourth Proportional to 540,391.45, 745,778.81 and 298,668.82

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Solution

The fourth proportional to 540,391.45, 745,778.81 and 298,668.82 is: 412,184.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,391.45 : 745,778.81 = 298,668.82 : x
  2. Step 2: Convert to fraction form
    540,391.45/745,778.81 = 298,668.82/x
  3. Step 3: Cross multiply
    540,391.45x = 745,778.81 × 298,668.82
  4. Step 4: Simplify right side
    540,391.45x = 222,740,877,163.70
  5. Step 5: Solve for x
    x = 222,740,877,163.70/540,391.45
  6. Step 6: Final answer
    x = 412,184.31

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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.