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Finding the Fourth Proportional to 518,203.80, 775,550.03 and 318,650.58

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Solution

The fourth proportional to 518,203.80, 775,550.03 and 318,650.58 is: 476,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,203.80 : 775,550.03 = 318,650.58 : x
  2. Step 2: Convert to fraction form
    518,203.80/775,550.03 = 318,650.58/x
  3. Step 3: Cross multiply
    518,203.80x = 775,550.03 × 318,650.58
  4. Step 4: Simplify right side
    518,203.80x = 247,129,465,285.27
  5. Step 5: Solve for x
    x = 247,129,465,285.27/518,203.80
  6. Step 6: Final answer
    x = 476,896.28

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1.5x scale

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.