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Finding the Fourth Proportional to 608,078.72, 839,149.76 and 339,806.72

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Solution

The fourth proportional to 608,078.72, 839,149.76 and 339,806.72 is: 468,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,078.72 : 839,149.76 = 339,806.72 : x
  2. Step 2: Convert to fraction form
    608,078.72/839,149.76 = 339,806.72/x
  3. Step 3: Cross multiply
    608,078.72x = 839,149.76 × 339,806.72
  4. Step 4: Simplify right side
    608,078.72x = 285,148,727,534.39
  5. Step 5: Solve for x
    x = 285,148,727,534.39/608,078.72
  6. Step 6: Final answer
    x = 468,933.90

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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.