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Finding the Fourth Proportional to 520,822.80, 781,234.20 and 146,845.80

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Solution

The fourth proportional to 520,822.80, 781,234.20 and 146,845.80 is: 220,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,822.80 : 781,234.20 = 146,845.80 : x
  2. Step 2: Convert to fraction form
    520,822.80/781,234.20 = 146,845.80/x
  3. Step 3: Cross multiply
    520,822.80x = 781,234.20 × 146,845.80
  4. Step 4: Simplify right side
    520,822.80x = 114,720,961,086.36
  5. Step 5: Solve for x
    x = 114,720,961,086.36/520,822.80
  6. Step 6: Final answer
    x = 220,268.70

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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.