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Finding the Fourth Proportional to 620,530.98, 856,282.29 and 348,584.10

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Solution

The fourth proportional to 620,530.98, 856,282.29 and 348,584.10 is: 481,017.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,530.98 : 856,282.29 = 348,584.10 : x
  2. Step 2: Convert to fraction form
    620,530.98/856,282.29 = 348,584.10/x
  3. Step 3: Cross multiply
    620,530.98x = 856,282.29 × 348,584.10
  4. Step 4: Simplify right side
    620,530.98x = 298,486,391,405.59
  5. Step 5: Solve for x
    x = 298,486,391,405.59/620,530.98
  6. Step 6: Final answer
    x = 481,017.71

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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.