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Finding the Fourth Proportional to 623,455.83, 934,893.09 and 323,856

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Solution

The fourth proportional to 623,455.83, 934,893.09 and 323,856 is: 485,633.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,455.83 : 934,893.09 = 323,856 : x
  2. Step 2: Convert to fraction form
    623,455.83/934,893.09 = 323,856/x
  3. Step 3: Cross multiply
    623,455.83x = 934,893.09 × 323,856
  4. Step 4: Simplify right side
    623,455.83x = 302,770,736,555.04
  5. Step 5: Solve for x
    x = 302,770,736,555.04/623,455.83
  6. Step 6: Final answer
    x = 485,633.02

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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.