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Finding the Fourth Proportional to 522,030.80, 784,716.60 and 485,051.60

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Solution

The fourth proportional to 522,030.80, 784,716.60 and 485,051.60 is: 729,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,030.80 : 784,716.60 = 485,051.60 : x
  2. Step 2: Convert to fraction form
    522,030.80/784,716.60 = 485,051.60/x
  3. Step 3: Cross multiply
    522,030.80x = 784,716.60 × 485,051.60
  4. Step 4: Simplify right side
    522,030.80x = 380,628,042,376.56
  5. Step 5: Solve for x
    x = 380,628,042,376.56/522,030.80
  6. Step 6: Final answer
    x = 729,129.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.