Home / 728,923.12-1,005,911.06-406,632.96

Finding the Fourth Proportional to 728,923.12, 1,005,911.06 and 406,632.96

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Solution

The fourth proportional to 728,923.12, 1,005,911.06 and 406,632.96 is: 561,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,923.12 : 1,005,911.06 = 406,632.96 : x
  2. Step 2: Convert to fraction form
    728,923.12/1,005,911.06 = 406,632.96/x
  3. Step 3: Cross multiply
    728,923.12x = 1,005,911.06 × 406,632.96
  4. Step 4: Simplify right side
    728,923.12x = 409,036,589,791.37
  5. Step 5: Solve for x
    x = 409,036,589,791.37/728,923.12
  6. Step 6: Final answer
    x = 561,151.90

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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.