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Finding the Fourth Proportional to 615,549.40, 923,324.10 and 405,424.60

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Solution

The fourth proportional to 615,549.40, 923,324.10 and 405,424.60 is: 608,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,549.40 : 923,324.10 = 405,424.60 : x
  2. Step 2: Convert to fraction form
    615,549.40/923,324.10 = 405,424.60/x
  3. Step 3: Cross multiply
    615,549.40x = 923,324.10 × 405,424.60
  4. Step 4: Simplify right side
    615,549.40x = 374,338,303,912.86
  5. Step 5: Solve for x
    x = 374,338,303,912.86/615,549.40
  6. Step 6: Final answer
    x = 608,136.90

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Similar ratio
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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.