Home / 738,941.28-1,019,738.39-399,409.53

Finding the Fourth Proportional to 738,941.28, 1,019,738.39 and 399,409.53

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Solution

The fourth proportional to 738,941.28, 1,019,738.39 and 399,409.53 is: 551,184.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,941.28 : 1,019,738.39 = 399,409.53 : x
  2. Step 2: Convert to fraction form
    738,941.28/1,019,738.39 = 399,409.53/x
  3. Step 3: Cross multiply
    738,941.28x = 1,019,738.39 × 399,409.53
  4. Step 4: Simplify right side
    738,941.28x = 407,293,231,072.86
  5. Step 5: Solve for x
    x = 407,293,231,072.86/738,941.28
  6. Step 6: Final answer
    x = 551,184.84

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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.