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Finding the Fourth Proportional to 483,574.23, 721,812.06 and 447,948

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Solution

The fourth proportional to 483,574.23, 721,812.06 and 447,948 is: 668,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,574.23 : 721,812.06 = 447,948 : x
  2. Step 2: Convert to fraction form
    483,574.23/721,812.06 = 447,948/x
  3. Step 3: Cross multiply
    483,574.23x = 721,812.06 × 447,948
  4. Step 4: Simplify right side
    483,574.23x = 323,334,268,652.88
  5. Step 5: Solve for x
    x = 323,334,268,652.88/483,574.23
  6. Step 6: Final answer
    x = 668,634.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.