Home / 738,942.28-1,019,739.76-399,410.54

Finding the Fourth Proportional to 738,942.28, 1,019,739.76 and 399,410.54

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Solution

The fourth proportional to 738,942.28, 1,019,739.76 and 399,410.54 is: 551,186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,942.28 : 1,019,739.76 = 399,410.54 : x
  2. Step 2: Convert to fraction form
    738,942.28/1,019,739.76 = 399,410.54/x
  3. Step 3: Cross multiply
    738,942.28x = 1,019,739.76 × 399,410.54
  4. Step 4: Simplify right side
    738,942.28x = 407,294,808,201.07
  5. Step 5: Solve for x
    x = 407,294,808,201.07/738,942.28
  6. Step 6: Final answer
    x = 551,186.23

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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.