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Finding the Fourth Proportional to 851,805.70, 1,277,708.55 and 477,780.10

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Solution

The fourth proportional to 851,805.70, 1,277,708.55 and 477,780.10 is: 716,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,805.70 : 1,277,708.55 = 477,780.10 : x
  2. Step 2: Convert to fraction form
    851,805.70/1,277,708.55 = 477,780.10/x
  3. Step 3: Cross multiply
    851,805.70x = 1,277,708.55 × 477,780.10
  4. Step 4: Simplify right side
    851,805.70x = 610,463,718,789.86
  5. Step 5: Solve for x
    x = 610,463,718,789.86/851,805.70
  6. Step 6: Final answer
    x = 716,670.15

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