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Finding the Fourth Proportional to 572,520.20, 858,045.90 and 319,800.20

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Solution

The fourth proportional to 572,520.20, 858,045.90 and 319,800.20 is: 479,290.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,520.20 : 858,045.90 = 319,800.20 : x
  2. Step 2: Convert to fraction form
    572,520.20/858,045.90 = 319,800.20/x
  3. Step 3: Cross multiply
    572,520.20x = 858,045.90 × 319,800.20
  4. Step 4: Simplify right side
    572,520.20x = 274,403,250,429.18
  5. Step 5: Solve for x
    x = 274,403,250,429.18/572,520.20
  6. Step 6: Final answer
    x = 479,290.08

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