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Finding the Fourth Proportional to 707,720.97, 976,682.58 and 401,825.81

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Solution

The fourth proportional to 707,720.97, 976,682.58 and 401,825.81 is: 554,535.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,720.97 : 976,682.58 = 401,825.81 : x
  2. Step 2: Convert to fraction form
    707,720.97/976,682.58 = 401,825.81/x
  3. Step 3: Cross multiply
    707,720.97x = 976,682.58 × 401,825.81
  4. Step 4: Simplify right side
    707,720.97x = 392,456,268,821.39
  5. Step 5: Solve for x
    x = 392,456,268,821.39/707,720.97
  6. Step 6: Final answer
    x = 554,535.31

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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.