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Finding the Fourth Proportional to 875,239.40, 1,310,234.70 and 520,070.60

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Solution

The fourth proportional to 875,239.40, 1,310,234.70 and 520,070.60 is: 778,546.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,239.40 : 1,310,234.70 = 520,070.60 : x
  2. Step 2: Convert to fraction form
    875,239.40/1,310,234.70 = 520,070.60/x
  3. Step 3: Cross multiply
    875,239.40x = 1,310,234.70 × 520,070.60
  4. Step 4: Simplify right side
    875,239.40x = 681,414,546,569.82
  5. Step 5: Solve for x
    x = 681,414,546,569.82/875,239.40
  6. Step 6: Final answer
    x = 778,546.47

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