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Finding the Fourth Proportional to 561,969.60, 775,282.82 and 368,423.78

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Solution

The fourth proportional to 561,969.60, 775,282.82 and 368,423.78 is: 508,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,969.60 : 775,282.82 = 368,423.78 : x
  2. Step 2: Convert to fraction form
    561,969.60/775,282.82 = 368,423.78/x
  3. Step 3: Cross multiply
    561,969.60x = 775,282.82 × 368,423.78
  4. Step 4: Simplify right side
    561,969.60x = 285,632,627,113.46
  5. Step 5: Solve for x
    x = 285,632,627,113.46/561,969.60
  6. Step 6: Final answer
    x = 508,270.60

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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.