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Finding the Fourth Proportional to 508,520.80, 761,906.40 and 330,936.40

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Solution

The fourth proportional to 508,520.80, 761,906.40 and 330,936.40 is: 495,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,520.80 : 761,906.40 = 330,936.40 : x
  2. Step 2: Convert to fraction form
    508,520.80/761,906.40 = 330,936.40/x
  3. Step 3: Cross multiply
    508,520.80x = 761,906.40 × 330,936.40
  4. Step 4: Simplify right side
    508,520.80x = 252,142,561,152.96
  5. Step 5: Solve for x
    x = 252,142,561,152.96/508,520.80
  6. Step 6: Final answer
    x = 495,835.30

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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.