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Finding the Fourth Proportional to 545,234.70, 816,102.45 and 426,261.90

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Solution

The fourth proportional to 545,234.70, 816,102.45 and 426,261.90 is: 638,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,234.70 : 816,102.45 = 426,261.90 : x
  2. Step 2: Convert to fraction form
    545,234.70/816,102.45 = 426,261.90/x
  3. Step 3: Cross multiply
    545,234.70x = 816,102.45 × 426,261.90
  4. Step 4: Simplify right side
    545,234.70x = 347,873,380,931.66
  5. Step 5: Solve for x
    x = 347,873,380,931.66/545,234.70
  6. Step 6: Final answer
    x = 638,025.02

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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.