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Finding the Fourth Proportional to 509,087.20, 763,630.80 and 322,309.60

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Solution

The fourth proportional to 509,087.20, 763,630.80 and 322,309.60 is: 483,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,087.20 : 763,630.80 = 322,309.60 : x
  2. Step 2: Convert to fraction form
    509,087.20/763,630.80 = 322,309.60/x
  3. Step 3: Cross multiply
    509,087.20x = 763,630.80 × 322,309.60
  4. Step 4: Simplify right side
    509,087.20x = 246,125,537,695.68
  5. Step 5: Solve for x
    x = 246,125,537,695.68/509,087.20
  6. Step 6: Final answer
    x = 483,464.40

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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.