Home / 739,983-1,021,183.92-400,458.54

Finding the Fourth Proportional to 739,983, 1,021,183.92 and 400,458.54

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Solution

The fourth proportional to 739,983, 1,021,183.92 and 400,458.54 is: 552,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,983 : 1,021,183.92 = 400,458.54 : x
  2. Step 2: Convert to fraction form
    739,983/1,021,183.92 = 400,458.54/x
  3. Step 3: Cross multiply
    739,983x = 1,021,183.92 × 400,458.54
  4. Step 4: Simplify right side
    739,983x = 408,941,821,674.68
  5. Step 5: Solve for x
    x = 408,941,821,674.68/739,983
  6. Step 6: Final answer
    x = 552,636.78

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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.