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Finding the Fourth Proportional to 531,507.76, 796,359.48 and 320,702.80

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Solution

The fourth proportional to 531,507.76, 796,359.48 and 320,702.80 is: 480,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,507.76 : 796,359.48 = 320,702.80 : x
  2. Step 2: Convert to fraction form
    531,507.76/796,359.48 = 320,702.80/x
  3. Step 3: Cross multiply
    531,507.76x = 796,359.48 × 320,702.80
  4. Step 4: Simplify right side
    531,507.76x = 255,394,715,042.54
  5. Step 5: Solve for x
    x = 255,394,715,042.54/531,507.76
  6. Step 6: Final answer
    x = 480,509.85

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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.