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Finding the Fourth Proportional to 636,998.58, 879,062.22 and 350,511.30

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Solution

The fourth proportional to 636,998.58, 879,062.22 and 350,511.30 is: 483,707.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,998.58 : 879,062.22 = 350,511.30 : x
  2. Step 2: Convert to fraction form
    636,998.58/879,062.22 = 350,511.30/x
  3. Step 3: Cross multiply
    636,998.58x = 879,062.22 × 350,511.30
  4. Step 4: Simplify right side
    636,998.58x = 308,121,241,513.09
  5. Step 5: Solve for x
    x = 308,121,241,513.09/636,998.58
  6. Step 6: Final answer
    x = 483,707.89

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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.