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Finding the Fourth Proportional to 527,078.72, 790,765.70 and 211,757.06

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Solution

The fourth proportional to 527,078.72, 790,765.70 and 211,757.06 is: 317,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,078.72 : 790,765.70 = 211,757.06 : x
  2. Step 2: Convert to fraction form
    527,078.72/790,765.70 = 211,757.06/x
  3. Step 3: Cross multiply
    527,078.72x = 790,765.70 × 211,757.06
  4. Step 4: Simplify right side
    527,078.72x = 167,450,219,780.84
  5. Step 5: Solve for x
    x = 167,450,219,780.84/527,078.72
  6. Step 6: Final answer
    x = 317,694.90

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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.