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Finding the Fourth Proportional to 665,893.39, 918,932.88 and 364,087.39

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Solution

The fourth proportional to 665,893.39, 918,932.88 and 364,087.39 is: 502,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,893.39 : 918,932.88 = 364,087.39 : x
  2. Step 2: Convert to fraction form
    665,893.39/918,932.88 = 364,087.39/x
  3. Step 3: Cross multiply
    665,893.39x = 918,932.88 × 364,087.39
  4. Step 4: Simplify right side
    665,893.39x = 334,571,873,864.38
  5. Step 5: Solve for x
    x = 334,571,873,864.38/665,893.39
  6. Step 6: Final answer
    x = 502,440.60

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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.