Home / 761,739.78-1,051,201.05-422,208.03

Finding the Fourth Proportional to 761,739.78, 1,051,201.05 and 422,208.03

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Solution

The fourth proportional to 761,739.78, 1,051,201.05 and 422,208.03 is: 582,647.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,739.78 : 1,051,201.05 = 422,208.03 : x
  2. Step 2: Convert to fraction form
    761,739.78/1,051,201.05 = 422,208.03/x
  3. Step 3: Cross multiply
    761,739.78x = 1,051,201.05 × 422,208.03
  4. Step 4: Simplify right side
    761,739.78x = 443,825,524,454.43
  5. Step 5: Solve for x
    x = 443,825,524,454.43/761,739.78
  6. Step 6: Final answer
    x = 582,647.17

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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.