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Finding the Fourth Proportional to 609,078.14, 839,969.28 and 523,007.81

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Solution

The fourth proportional to 609,078.14, 839,969.28 and 523,007.81 is: 721,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,078.14 : 839,969.28 = 523,007.81 : x
  2. Step 2: Convert to fraction form
    609,078.14/839,969.28 = 523,007.81/x
  3. Step 3: Cross multiply
    609,078.14x = 839,969.28 × 523,007.81
  4. Step 4: Simplify right side
    609,078.14x = 439,310,489,400.23
  5. Step 5: Solve for x
    x = 439,310,489,400.23/609,078.14
  6. Step 6: Final answer
    x = 721,271.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.