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Finding the Fourth Proportional to 497,079.60, 745,619.40 and 429,428.40

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Solution

The fourth proportional to 497,079.60, 745,619.40 and 429,428.40 is: 644,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,079.60 : 745,619.40 = 429,428.40 : x
  2. Step 2: Convert to fraction form
    497,079.60/745,619.40 = 429,428.40/x
  3. Step 3: Cross multiply
    497,079.60x = 745,619.40 × 429,428.40
  4. Step 4: Simplify right side
    497,079.60x = 320,190,145,950.96
  5. Step 5: Solve for x
    x = 320,190,145,950.96/497,079.60
  6. Step 6: Final answer
    x = 644,142.60

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