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Finding the Fourth Proportional to 471,630.36, 650,639.58 and 318,619.32

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Solution

The fourth proportional to 471,630.36, 650,639.58 and 318,619.32 is: 439,552.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,630.36 : 650,639.58 = 318,619.32 : x
  2. Step 2: Convert to fraction form
    471,630.36/650,639.58 = 318,619.32/x
  3. Step 3: Cross multiply
    471,630.36x = 650,639.58 × 318,619.32
  4. Step 4: Simplify right side
    471,630.36x = 207,306,340,544.69
  5. Step 5: Solve for x
    x = 207,306,340,544.69/471,630.36
  6. Step 6: Final answer
    x = 439,552.58

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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.