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Finding the Fourth Proportional to 547,245.20, 820,867.80 and 494,757.20

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Solution

The fourth proportional to 547,245.20, 820,867.80 and 494,757.20 is: 742,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,245.20 : 820,867.80 = 494,757.20 : x
  2. Step 2: Convert to fraction form
    547,245.20/820,867.80 = 494,757.20/x
  3. Step 3: Cross multiply
    547,245.20x = 820,867.80 × 494,757.20
  4. Step 4: Simplify right side
    547,245.20x = 406,130,254,298.16
  5. Step 5: Solve for x
    x = 406,130,254,298.16/547,245.20
  6. Step 6: Final answer
    x = 742,135.80

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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.