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Finding the Fourth Proportional to 509,910.10, 764,209.05 and 310,018.30

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Solution

The fourth proportional to 509,910.10, 764,209.05 and 310,018.30 is: 464,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,910.10 : 764,209.05 = 310,018.30 : x
  2. Step 2: Convert to fraction form
    509,910.10/764,209.05 = 310,018.30/x
  3. Step 3: Cross multiply
    509,910.10x = 764,209.05 × 310,018.30
  4. Step 4: Simplify right side
    509,910.10x = 236,918,790,525.62
  5. Step 5: Solve for x
    x = 236,918,790,525.62/509,910.10
  6. Step 6: Final answer
    x = 464,628.55

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Double scale
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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.