Home / 739,921.80-1,021,094.78-400,390.05

Finding the Fourth Proportional to 739,921.80, 1,021,094.78 and 400,390.05

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Solution

The fourth proportional to 739,921.80, 1,021,094.78 and 400,390.05 is: 552,539.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,921.80 : 1,021,094.78 = 400,390.05 : x
  2. Step 2: Convert to fraction form
    739,921.80/1,021,094.78 = 400,390.05/x
  3. Step 3: Cross multiply
    739,921.80x = 1,021,094.78 × 400,390.05
  4. Step 4: Simplify right side
    739,921.80x = 408,836,188,016.99
  5. Step 5: Solve for x
    x = 408,836,188,016.99/739,921.80
  6. Step 6: Final answer
    x = 552,539.73

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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.