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Finding the Fourth Proportional to 615,540.70, 923,311.05 and 482,830.30

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Solution

The fourth proportional to 615,540.70, 923,311.05 and 482,830.30 is: 724,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,540.70 : 923,311.05 = 482,830.30 : x
  2. Step 2: Convert to fraction form
    615,540.70/923,311.05 = 482,830.30/x
  3. Step 3: Cross multiply
    615,540.70x = 923,311.05 × 482,830.30
  4. Step 4: Simplify right side
    615,540.70x = 445,802,551,264.82
  5. Step 5: Solve for x
    x = 445,802,551,264.82/615,540.70
  6. Step 6: Final answer
    x = 724,245.45

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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.