Home / 772,743.24-1,066,369.79-428,523.65

Finding the Fourth Proportional to 772,743.24, 1,066,369.79 and 428,523.65

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Solution

The fourth proportional to 772,743.24, 1,066,369.79 and 428,523.65 is: 591,353.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,743.24 : 1,066,369.79 = 428,523.65 : x
  2. Step 2: Convert to fraction form
    772,743.24/1,066,369.79 = 428,523.65/x
  3. Step 3: Cross multiply
    772,743.24x = 1,066,369.79 × 428,523.65
  4. Step 4: Simplify right side
    772,743.24x = 456,964,674,398.88
  5. Step 5: Solve for x
    x = 456,964,674,398.88/772,743.24
  6. Step 6: Final answer
    x = 591,353.83

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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.