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Finding the Fourth Proportional to 522,536.28, 721,507.68 and 401,485.56

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Solution

The fourth proportional to 522,536.28, 721,507.68 and 401,485.56 is: 554,363.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,536.28 : 721,507.68 = 401,485.56 : x
  2. Step 2: Convert to fraction form
    522,536.28/721,507.68 = 401,485.56/x
  3. Step 3: Cross multiply
    522,536.28x = 721,507.68 × 401,485.56
  4. Step 4: Simplify right side
    522,536.28x = 289,674,914,949.10
  5. Step 5: Solve for x
    x = 289,674,914,949.10/522,536.28
  6. Step 6: Final answer
    x = 554,363.26

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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.