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Finding the Fourth Proportional to 552,655.20, 828,982.80 and 300,712.80

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Solution

The fourth proportional to 552,655.20, 828,982.80 and 300,712.80 is: 451,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,655.20 : 828,982.80 = 300,712.80 : x
  2. Step 2: Convert to fraction form
    552,655.20/828,982.80 = 300,712.80/x
  3. Step 3: Cross multiply
    552,655.20x = 828,982.80 × 300,712.80
  4. Step 4: Simplify right side
    552,655.20x = 249,285,738,939.84
  5. Step 5: Solve for x
    x = 249,285,738,939.84/552,655.20
  6. Step 6: Final answer
    x = 451,069.20

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Similar ratio
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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.