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Finding the Fourth Proportional to 615,221.10, 923,815.80 and 465,630.30

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Solution

The fourth proportional to 615,221.10, 923,815.80 and 465,630.30 is: 699,190.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,221.10 : 923,815.80 = 465,630.30 : x
  2. Step 2: Convert to fraction form
    615,221.10/923,815.80 = 465,630.30/x
  3. Step 3: Cross multiply
    615,221.10x = 923,815.80 × 465,630.30
  4. Step 4: Simplify right side
    615,221.10x = 430,156,628,098.74
  5. Step 5: Solve for x
    x = 430,156,628,098.74/615,221.10
  6. Step 6: Final answer
    x = 699,190.30

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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.