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Finding the Fourth Proportional to 452,011.20, 678,016.80 and 274,865.60

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Solution

The fourth proportional to 452,011.20, 678,016.80 and 274,865.60 is: 412,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,011.20 : 678,016.80 = 274,865.60 : x
  2. Step 2: Convert to fraction form
    452,011.20/678,016.80 = 274,865.60/x
  3. Step 3: Cross multiply
    452,011.20x = 678,016.80 × 274,865.60
  4. Step 4: Simplify right side
    452,011.20x = 186,363,494,542.08
  5. Step 5: Solve for x
    x = 186,363,494,542.08/452,011.20
  6. Step 6: Final answer
    x = 412,298.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.