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Finding the Fourth Proportional to 610,638.39, 842,684.04 and 338,687.37

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Solution

The fourth proportional to 610,638.39, 842,684.04 and 338,687.37 is: 467,390.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,638.39 : 842,684.04 = 338,687.37 : x
  2. Step 2: Convert to fraction form
    610,638.39/842,684.04 = 338,687.37/x
  3. Step 3: Cross multiply
    610,638.39x = 842,684.04 × 338,687.37
  4. Step 4: Simplify right side
    610,638.39x = 285,406,441,248.58
  5. Step 5: Solve for x
    x = 285,406,441,248.58/610,638.39
  6. Step 6: Final answer
    x = 467,390.27

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1.5x scale

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.