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Finding the Fourth Proportional to 561,104.48, 774,322.90 and 306,455.68

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Solution

The fourth proportional to 561,104.48, 774,322.90 and 306,455.68 is: 422,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,104.48 : 774,322.90 = 306,455.68 : x
  2. Step 2: Convert to fraction form
    561,104.48/774,322.90 = 306,455.68/x
  3. Step 3: Cross multiply
    561,104.48x = 774,322.90 × 306,455.68
  4. Step 4: Simplify right side
    561,104.48x = 237,295,650,859.07
  5. Step 5: Solve for x
    x = 237,295,650,859.07/561,104.48
  6. Step 6: Final answer
    x = 422,908.14

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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.