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Finding the Fourth Proportional to 561,580, 774,978.96 and 306,932.92

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Solution

The fourth proportional to 561,580, 774,978.96 and 306,932.92 is: 423,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,580 : 774,978.96 = 306,932.92 : x
  2. Step 2: Convert to fraction form
    561,580/774,978.96 = 306,932.92/x
  3. Step 3: Cross multiply
    561,580x = 774,978.96 × 306,932.92
  4. Step 4: Simplify right side
    561,580x = 237,866,555,131.36
  5. Step 5: Solve for x
    x = 237,866,555,131.36/561,580
  6. Step 6: Final answer
    x = 423,566.64

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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.