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Finding the Fourth Proportional to 671,661, 926,892.18 and 369,855

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Solution

The fourth proportional to 671,661, 926,892.18 and 369,855 is: 510,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,661 : 926,892.18 = 369,855 : x
  2. Step 2: Convert to fraction form
    671,661/926,892.18 = 369,855/x
  3. Step 3: Cross multiply
    671,661x = 926,892.18 × 369,855
  4. Step 4: Simplify right side
    671,661x = 342,815,707,233.90
  5. Step 5: Solve for x
    x = 342,815,707,233.90/671,661
  6. Step 6: Final answer
    x = 510,399.90

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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.