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Finding the Fourth Proportional to 615,418.80, 923,128.20 and 377,991.60

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Solution

The fourth proportional to 615,418.80, 923,128.20 and 377,991.60 is: 566,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,418.80 : 923,128.20 = 377,991.60 : x
  2. Step 2: Convert to fraction form
    615,418.80/923,128.20 = 377,991.60/x
  3. Step 3: Cross multiply
    615,418.80x = 923,128.20 × 377,991.60
  4. Step 4: Simplify right side
    615,418.80x = 348,934,705,323.12
  5. Step 5: Solve for x
    x = 348,934,705,323.12/615,418.80
  6. Step 6: Final answer
    x = 566,987.40

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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.