Home / 661,383.16-912,903-431,975.52

Finding the Fourth Proportional to 661,383.16, 912,903 and 431,975.52

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Solution

The fourth proportional to 661,383.16, 912,903 and 431,975.52 is: 596,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,383.16 : 912,903 = 431,975.52 : x
  2. Step 2: Convert to fraction form
    661,383.16/912,903 = 431,975.52/x
  3. Step 3: Cross multiply
    661,383.16x = 912,903 × 431,975.52
  4. Step 4: Simplify right side
    661,383.16x = 394,351,743,570.05
  5. Step 5: Solve for x
    x = 394,351,743,570.05/661,383.16
  6. Step 6: Final answer
    x = 596,253.08

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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.