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Finding the Fourth Proportional to 561,860.61, 775,578.48 and 368,280.78

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Solution

The fourth proportional to 561,860.61, 775,578.48 and 368,280.78 is: 508,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,860.61 : 775,578.48 = 368,280.78 : x
  2. Step 2: Convert to fraction form
    561,860.61/775,578.48 = 368,280.78/x
  3. Step 3: Cross multiply
    561,860.61x = 775,578.48 × 368,280.78
  4. Step 4: Simplify right side
    561,860.61x = 285,630,647,565.61
  5. Step 5: Solve for x
    x = 285,630,647,565.61/561,860.61
  6. Step 6: Final answer
    x = 508,365.67

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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.