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Finding the Fourth Proportional to 721,541.82, 996,034.40 and 449,745.10

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Solution

The fourth proportional to 721,541.82, 996,034.40 and 449,745.10 is: 620,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,541.82 : 996,034.40 = 449,745.10 : x
  2. Step 2: Convert to fraction form
    721,541.82/996,034.40 = 449,745.10/x
  3. Step 3: Cross multiply
    721,541.82x = 996,034.40 × 449,745.10
  4. Step 4: Simplify right side
    721,541.82x = 447,961,590,831.44
  5. Step 5: Solve for x
    x = 447,961,590,831.44/721,541.82
  6. Step 6: Final answer
    x = 620,839.40

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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.