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Finding the Fourth Proportional to 530,909.76, 796,620 and 331,178.88

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Solution

The fourth proportional to 530,909.76, 796,620 and 331,178.88 is: 496,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,909.76 : 796,620 = 331,178.88 : x
  2. Step 2: Convert to fraction form
    530,909.76/796,620 = 331,178.88/x
  3. Step 3: Cross multiply
    530,909.76x = 796,620 × 331,178.88
  4. Step 4: Simplify right side
    530,909.76x = 263,823,719,385.60
  5. Step 5: Solve for x
    x = 263,823,719,385.60/530,909.76
  6. Step 6: Final answer
    x = 496,927.61

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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.