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Finding the Fourth Proportional to 513,542.40, 708,667.20 and 298,682.88

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Solution

The fourth proportional to 513,542.40, 708,667.20 and 298,682.88 is: 412,169.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,542.40 : 708,667.20 = 298,682.88 : x
  2. Step 2: Convert to fraction form
    513,542.40/708,667.20 = 298,682.88/x
  3. Step 3: Cross multiply
    513,542.40x = 708,667.20 × 298,682.88
  4. Step 4: Simplify right side
    513,542.40x = 211,666,760,257.54
  5. Step 5: Solve for x
    x = 211,666,760,257.54/513,542.40
  6. Step 6: Final answer
    x = 412,169.98

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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.