Home / 739,989.99-1,021,189.46-400,458.33

Finding the Fourth Proportional to 739,989.99, 1,021,189.46 and 400,458.33

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Solution

The fourth proportional to 739,989.99, 1,021,189.46 and 400,458.33 is: 552,634.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,989.99 : 1,021,189.46 = 400,458.33 : x
  2. Step 2: Convert to fraction form
    739,989.99/1,021,189.46 = 400,458.33/x
  3. Step 3: Cross multiply
    739,989.99x = 1,021,189.46 × 400,458.33
  4. Step 4: Simplify right side
    739,989.99x = 408,943,823,762.91
  5. Step 5: Solve for x
    x = 408,943,823,762.91/739,989.99
  6. Step 6: Final answer
    x = 552,634.26

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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.