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Finding the Fourth Proportional to 636,419.47, 953,998.62 and 298,855.85

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Solution

The fourth proportional to 636,419.47, 953,998.62 and 298,855.85 is: 447,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,419.47 : 953,998.62 = 298,855.85 : x
  2. Step 2: Convert to fraction form
    636,419.47/953,998.62 = 298,855.85/x
  3. Step 3: Cross multiply
    636,419.47x = 953,998.62 × 298,855.85
  4. Step 4: Simplify right side
    636,419.47x = 285,108,068,478.93
  5. Step 5: Solve for x
    x = 285,108,068,478.93/636,419.47
  6. Step 6: Final answer
    x = 447,987.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.