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Finding the Fourth Proportional to 561,860.46, 775,578.28 and 368,280.64

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Solution

The fourth proportional to 561,860.46, 775,578.28 and 368,280.64 is: 508,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,860.46 : 775,578.28 = 368,280.64 : x
  2. Step 2: Convert to fraction form
    561,860.46/775,578.28 = 368,280.64/x
  3. Step 3: Cross multiply
    561,860.46x = 775,578.28 × 368,280.64
  4. Step 4: Simplify right side
    561,860.46x = 285,630,465,328.50
  5. Step 5: Solve for x
    x = 285,630,465,328.50/561,860.46
  6. Step 6: Final answer
    x = 508,365.49

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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.