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Finding the Fourth Proportional to 723,528.60, 998,471.72 and 401,268.48

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Solution

The fourth proportional to 723,528.60, 998,471.72 and 401,268.48 is: 553,751.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,528.60 : 998,471.72 = 401,268.48 : x
  2. Step 2: Convert to fraction form
    723,528.60/998,471.72 = 401,268.48/x
  3. Step 3: Cross multiply
    723,528.60x = 998,471.72 × 401,268.48
  4. Step 4: Simplify right side
    723,528.60x = 400,655,229,407.39
  5. Step 5: Solve for x
    x = 400,655,229,407.39/723,528.60
  6. Step 6: Final answer
    x = 553,751.75

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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.