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Finding the Fourth Proportional to 620,730.81, 856,633.86 and 348,797.88

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Solution

The fourth proportional to 620,730.81, 856,633.86 and 348,797.88 is: 481,355.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,730.81 : 856,633.86 = 348,797.88 : x
  2. Step 2: Convert to fraction form
    620,730.81/856,633.86 = 348,797.88/x
  3. Step 3: Cross multiply
    620,730.81x = 856,633.86 × 348,797.88
  4. Step 4: Simplify right side
    620,730.81x = 298,792,074,304.22
  5. Step 5: Solve for x
    x = 298,792,074,304.22/620,730.81
  6. Step 6: Final answer
    x = 481,355.31

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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.