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Finding the Fourth Proportional to 615,928.20, 923,892.30 and 550,609.80

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Solution

The fourth proportional to 615,928.20, 923,892.30 and 550,609.80 is: 825,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,928.20 : 923,892.30 = 550,609.80 : x
  2. Step 2: Convert to fraction form
    615,928.20/923,892.30 = 550,609.80/x
  3. Step 3: Cross multiply
    615,928.20x = 923,892.30 × 550,609.80
  4. Step 4: Simplify right side
    615,928.20x = 508,704,154,524.54
  5. Step 5: Solve for x
    x = 508,704,154,524.54/615,928.20
  6. Step 6: Final answer
    x = 825,914.70

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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.