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Finding the Fourth Proportional to 551,351.40, 825,933.60 and 485,595.60

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Solution

The fourth proportional to 551,351.40, 825,933.60 and 485,595.60 is: 727,430.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,351.40 : 825,933.60 = 485,595.60 : x
  2. Step 2: Convert to fraction form
    551,351.40/825,933.60 = 485,595.60/x
  3. Step 3: Cross multiply
    551,351.40x = 825,933.60 × 485,595.60
  4. Step 4: Simplify right side
    551,351.40x = 401,069,722,052.16
  5. Step 5: Solve for x
    x = 401,069,722,052.16/551,351.40
  6. Step 6: Final answer
    x = 727,430.31

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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.