Home / 864,930.84-1,297,396.26-391,605.72

Finding the Fourth Proportional to 864,930.84, 1,297,396.26 and 391,605.72

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Solution

The fourth proportional to 864,930.84, 1,297,396.26 and 391,605.72 is: 587,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,930.84 : 1,297,396.26 = 391,605.72 : x
  2. Step 2: Convert to fraction form
    864,930.84/1,297,396.26 = 391,605.72/x
  3. Step 3: Cross multiply
    864,930.84x = 1,297,396.26 × 391,605.72
  4. Step 4: Simplify right side
    864,930.84x = 508,067,796,522.61
  5. Step 5: Solve for x
    x = 508,067,796,522.61/864,930.84
  6. Step 6: Final answer
    x = 587,408.58

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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.