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Finding the Fourth Proportional to 645,163.20, 967,939.20 and 458,539.20

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Solution

The fourth proportional to 645,163.20, 967,939.20 and 458,539.20 is: 687,946.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,163.20 : 967,939.20 = 458,539.20 : x
  2. Step 2: Convert to fraction form
    645,163.20/967,939.20 = 458,539.20/x
  3. Step 3: Cross multiply
    645,163.20x = 967,939.20 × 458,539.20
  4. Step 4: Simplify right side
    645,163.20x = 443,838,066,416.64
  5. Step 5: Solve for x
    x = 443,838,066,416.64/645,163.20
  6. Step 6: Final answer
    x = 687,946.97

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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.