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Finding the Fourth Proportional to 617,308.23, 926,128.77 and 257,359.47

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Solution

The fourth proportional to 617,308.23, 926,128.77 and 257,359.47 is: 386,108.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,308.23 : 926,128.77 = 257,359.47 : x
  2. Step 2: Convert to fraction form
    617,308.23/926,128.77 = 257,359.47/x
  3. Step 3: Cross multiply
    617,308.23x = 926,128.77 × 257,359.47
  4. Step 4: Simplify right side
    617,308.23x = 238,348,009,398.95
  5. Step 5: Solve for x
    x = 238,348,009,398.95/617,308.23
  6. Step 6: Final answer
    x = 386,108.59

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