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Finding the Fourth Proportional to 708,797.62, 978,105.21 and 402,833.59

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Solution

The fourth proportional to 708,797.62, 978,105.21 and 402,833.59 is: 555,890.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,797.62 : 978,105.21 = 402,833.59 : x
  2. Step 2: Convert to fraction form
    708,797.62/978,105.21 = 402,833.59/x
  3. Step 3: Cross multiply
    708,797.62x = 978,105.21 × 402,833.59
  4. Step 4: Simplify right side
    708,797.62x = 394,013,629,186.12
  5. Step 5: Solve for x
    x = 394,013,629,186.12/708,797.62
  6. Step 6: Final answer
    x = 555,890.17

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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.