Home / 661,394.24-912,918.32-431,986.64

Finding the Fourth Proportional to 661,394.24, 912,918.32 and 431,986.64

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Solution

The fourth proportional to 661,394.24, 912,918.32 and 431,986.64 is: 596,268.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,394.24 : 912,918.32 = 431,986.64 : x
  2. Step 2: Convert to fraction form
    661,394.24/912,918.32 = 431,986.64/x
  3. Step 3: Cross multiply
    661,394.24x = 912,918.32 × 431,986.64
  4. Step 4: Simplify right side
    661,394.24x = 394,368,517,651.25
  5. Step 5: Solve for x
    x = 394,368,517,651.25/661,394.24
  6. Step 6: Final answer
    x = 596,268.45

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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.