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Finding the Fourth Proportional to 401,632.40, 554,829.44 and 320,954.24

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Solution

The fourth proportional to 401,632.40, 554,829.44 and 320,954.24 is: 443,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,632.40 : 554,829.44 = 320,954.24 : x
  2. Step 2: Convert to fraction form
    401,632.40/554,829.44 = 320,954.24/x
  3. Step 3: Cross multiply
    401,632.40x = 554,829.44 × 320,954.24
  4. Step 4: Simplify right side
    401,632.40x = 178,074,861,244.83
  5. Step 5: Solve for x
    x = 178,074,861,244.83/401,632.40
  6. Step 6: Final answer
    x = 443,377.73

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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.