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Finding the Fourth Proportional to 567,455.50, 783,093.96 and 312,815.80

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Solution

The fourth proportional to 567,455.50, 783,093.96 and 312,815.80 is: 431,688.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,455.50 : 783,093.96 = 312,815.80 : x
  2. Step 2: Convert to fraction form
    567,455.50/783,093.96 = 312,815.80/x
  3. Step 3: Cross multiply
    567,455.50x = 783,093.96 × 312,815.80
  4. Step 4: Simplify right side
    567,455.50x = 244,964,163,572.57
  5. Step 5: Solve for x
    x = 244,964,163,572.57/567,455.50
  6. Step 6: Final answer
    x = 431,688.76

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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.