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Finding the Fourth Proportional to 739,950, 1,021,138.32 and 400,425.54

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Solution

The fourth proportional to 739,950, 1,021,138.32 and 400,425.54 is: 552,591.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,950 : 1,021,138.32 = 400,425.54 : x
  2. Step 2: Convert to fraction form
    739,950/1,021,138.32 = 400,425.54/x
  3. Step 3: Cross multiply
    739,950x = 1,021,138.32 × 400,425.54
  4. Step 4: Simplify right side
    739,950x = 408,889,863,200.69
  5. Step 5: Solve for x
    x = 408,889,863,200.69/739,950
  6. Step 6: Final answer
    x = 552,591.21

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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.