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Finding the Fourth Proportional to 891,662.72, 1,337,494.08 and 385,809.62

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Solution

The fourth proportional to 891,662.72, 1,337,494.08 and 385,809.62 is: 578,714.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,662.72 : 1,337,494.08 = 385,809.62 : x
  2. Step 2: Convert to fraction form
    891,662.72/1,337,494.08 = 385,809.62/x
  3. Step 3: Cross multiply
    891,662.72x = 1,337,494.08 × 385,809.62
  4. Step 4: Simplify right side
    891,662.72x = 516,018,082,757.05
  5. Step 5: Solve for x
    x = 516,018,082,757.05/891,662.72
  6. Step 6: Final answer
    x = 578,714.43

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Double scale
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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.