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Finding the Fourth Proportional to 623,715.29, 860,530.62 and 381,745.61

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Solution

The fourth proportional to 623,715.29, 860,530.62 and 381,745.61 is: 526,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,715.29 : 860,530.62 = 381,745.61 : x
  2. Step 2: Convert to fraction form
    623,715.29/860,530.62 = 381,745.61/x
  3. Step 3: Cross multiply
    623,715.29x = 860,530.62 × 381,745.61
  4. Step 4: Simplify right side
    623,715.29x = 328,503,780,244.20
  5. Step 5: Solve for x
    x = 328,503,780,244.20/623,715.29
  6. Step 6: Final answer
    x = 526,688.68

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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.