Home / 738,936.78-1,019,732.19-399,405.03

Finding the Fourth Proportional to 738,936.78, 1,019,732.19 and 399,405.03

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Solution

The fourth proportional to 738,936.78, 1,019,732.19 and 399,405.03 is: 551,178.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,936.78 : 1,019,732.19 = 399,405.03 : x
  2. Step 2: Convert to fraction form
    738,936.78/1,019,732.19 = 399,405.03/x
  3. Step 3: Cross multiply
    738,936.78x = 1,019,732.19 × 399,405.03
  4. Step 4: Simplify right side
    738,936.78x = 407,286,160,617.15
  5. Step 5: Solve for x
    x = 407,286,160,617.15/738,936.78
  6. Step 6: Final answer
    x = 551,178.63

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1.5x scale

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.