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Finding the Fourth Proportional to 489,276.92, 675,191.50 and 274,412.28

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Solution

The fourth proportional to 489,276.92, 675,191.50 and 274,412.28 is: 378,682.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,276.92 : 675,191.50 = 274,412.28 : x
  2. Step 2: Convert to fraction form
    489,276.92/675,191.50 = 274,412.28/x
  3. Step 3: Cross multiply
    489,276.92x = 675,191.50 × 274,412.28
  4. Step 4: Simplify right side
    489,276.92x = 185,280,838,951.62
  5. Step 5: Solve for x
    x = 185,280,838,951.62/489,276.92
  6. Step 6: Final answer
    x = 378,682.97

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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.