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Finding the Fourth Proportional to 636,978.22, 879,054.19 and 365,098.58

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Solution

The fourth proportional to 636,978.22, 879,054.19 and 365,098.58 is: 503,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,978.22 : 879,054.19 = 365,098.58 : x
  2. Step 2: Convert to fraction form
    636,978.22/879,054.19 = 365,098.58/x
  3. Step 3: Cross multiply
    636,978.22x = 879,054.19 × 365,098.58
  4. Step 4: Simplify right side
    636,978.22x = 320,941,431,204.03
  5. Step 5: Solve for x
    x = 320,941,431,204.03/636,978.22
  6. Step 6: Final answer
    x = 503,849.93

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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.