Home / 738,448.28-1,019,057.34-398,915.48

Finding the Fourth Proportional to 738,448.28, 1,019,057.34 and 398,915.48

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Solution

The fourth proportional to 738,448.28, 1,019,057.34 and 398,915.48 is: 550,502.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,448.28 : 1,019,057.34 = 398,915.48 : x
  2. Step 2: Convert to fraction form
    738,448.28/1,019,057.34 = 398,915.48/x
  3. Step 3: Cross multiply
    738,448.28x = 1,019,057.34 × 398,915.48
  4. Step 4: Simplify right side
    738,448.28x = 406,517,747,933.62
  5. Step 5: Solve for x
    x = 406,517,747,933.62/738,448.28
  6. Step 6: Final answer
    x = 550,502.67

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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.