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Finding the Fourth Proportional to 860,466.32, 1,290,670.32 and 327,968

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Solution

The fourth proportional to 860,466.32, 1,290,670.32 and 327,968 is: 491,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,466.32 : 1,290,670.32 = 327,968 : x
  2. Step 2: Convert to fraction form
    860,466.32/1,290,670.32 = 327,968/x
  3. Step 3: Cross multiply
    860,466.32x = 1,290,670.32 × 327,968
  4. Step 4: Simplify right side
    860,466.32x = 423,298,563,509.76
  5. Step 5: Solve for x
    x = 423,298,563,509.76/860,466.32
  6. Step 6: Final answer
    x = 491,940.89

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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.