Home / 772,691.29-1,066,379.48-428,638.07

Finding the Fourth Proportional to 772,691.29, 1,066,379.48 and 428,638.07

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Solution

The fourth proportional to 772,691.29, 1,066,379.48 and 428,638.07 is: 591,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,691.29 : 1,066,379.48 = 428,638.07 : x
  2. Step 2: Convert to fraction form
    772,691.29/1,066,379.48 = 428,638.07/x
  3. Step 3: Cross multiply
    772,691.29x = 1,066,379.48 × 428,638.07
  4. Step 4: Simplify right side
    772,691.29x = 457,090,847,796.93
  5. Step 5: Solve for x
    x = 457,090,847,796.93/772,691.29
  6. Step 6: Final answer
    x = 591,556.88

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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.