Home / 738,636.32-1,019,317.81-399,104.57

Finding the Fourth Proportional to 738,636.32, 1,019,317.81 and 399,104.57

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Solution

The fourth proportional to 738,636.32, 1,019,317.81 and 399,104.57 is: 550,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,636.32 : 1,019,317.81 = 399,104.57 : x
  2. Step 2: Convert to fraction form
    738,636.32/1,019,317.81 = 399,104.57/x
  3. Step 3: Cross multiply
    738,636.32x = 1,019,317.81 × 399,104.57
  4. Step 4: Simplify right side
    738,636.32x = 406,814,394,257.87
  5. Step 5: Solve for x
    x = 406,814,394,257.87/738,636.32
  6. Step 6: Final answer
    x = 550,764.14

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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.