Home / 921,673.42-1,382,378.91-290,505.22

Finding the Fourth Proportional to 921,673.42, 1,382,378.91 and 290,505.22

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Solution

The fourth proportional to 921,673.42, 1,382,378.91 and 290,505.22 is: 435,716.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,673.42 : 1,382,378.91 = 290,505.22 : x
  2. Step 2: Convert to fraction form
    921,673.42/1,382,378.91 = 290,505.22/x
  3. Step 3: Cross multiply
    921,673.42x = 1,382,378.91 × 290,505.22
  4. Step 4: Simplify right side
    921,673.42x = 401,588,289,372.91
  5. Step 5: Solve for x
    x = 401,588,289,372.91/921,673.42
  6. Step 6: Final answer
    x = 435,716.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.