Home / 738,619.38-1,019,294.44-399,087.63

Finding the Fourth Proportional to 738,619.38, 1,019,294.44 and 399,087.63

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Solution

The fourth proportional to 738,619.38, 1,019,294.44 and 399,087.63 is: 550,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,619.38 : 1,019,294.44 = 399,087.63 : x
  2. Step 2: Convert to fraction form
    738,619.38/1,019,294.44 = 399,087.63/x
  3. Step 3: Cross multiply
    738,619.38x = 1,019,294.44 × 399,087.63
  4. Step 4: Simplify right side
    738,619.38x = 406,787,802,331.78
  5. Step 5: Solve for x
    x = 406,787,802,331.78/738,619.38
  6. Step 6: Final answer
    x = 550,740.76

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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.