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Finding the Fourth Proportional to 531,000.40, 795,334.20 and 320,270.80

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Solution

The fourth proportional to 531,000.40, 795,334.20 and 320,270.80 is: 479,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,000.40 : 795,334.20 = 320,270.80 : x
  2. Step 2: Convert to fraction form
    531,000.40/795,334.20 = 320,270.80/x
  3. Step 3: Cross multiply
    531,000.40x = 795,334.20 × 320,270.80
  4. Step 4: Simplify right side
    531,000.40x = 254,722,320,501.36
  5. Step 5: Solve for x
    x = 254,722,320,501.36/531,000.40
  6. Step 6: Final answer
    x = 479,702.69

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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.