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Finding the Fourth Proportional to 708,797.67, 978,105.33 and 402,833.62

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Solution

The fourth proportional to 708,797.67, 978,105.33 and 402,833.62 is: 555,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,797.67 : 978,105.33 = 402,833.62 : x
  2. Step 2: Convert to fraction form
    708,797.67/978,105.33 = 402,833.62/x
  3. Step 3: Cross multiply
    708,797.67x = 978,105.33 × 402,833.62
  4. Step 4: Simplify right side
    708,797.67x = 394,013,710,825.20
  5. Step 5: Solve for x
    x = 394,013,710,825.20/708,797.67
  6. Step 6: Final answer
    x = 555,890.25

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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.