Home / 738,431.44-1,019,035.38-398,899.69

Finding the Fourth Proportional to 738,431.44, 1,019,035.38 and 398,899.69

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Solution

The fourth proportional to 738,431.44, 1,019,035.38 and 398,899.69 is: 550,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,431.44 : 1,019,035.38 = 398,899.69 : x
  2. Step 2: Convert to fraction form
    738,431.44/1,019,035.38 = 398,899.69/x
  3. Step 3: Cross multiply
    738,431.44x = 1,019,035.38 × 398,899.69
  4. Step 4: Simplify right side
    738,431.44x = 406,492,896,129.32
  5. Step 5: Solve for x
    x = 406,492,896,129.32/738,431.44
  6. Step 6: Final answer
    x = 550,481.57

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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.