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Finding the Fourth Proportional to 618,018.18, 853,361.10 and 496,770.90

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Solution

The fourth proportional to 618,018.18, 853,361.10 and 496,770.90 is: 685,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,018.18 : 853,361.10 = 496,770.90 : x
  2. Step 2: Convert to fraction form
    618,018.18/853,361.10 = 496,770.90/x
  3. Step 3: Cross multiply
    618,018.18x = 853,361.10 × 496,770.90
  4. Step 4: Simplify right side
    618,018.18x = 423,924,961,671.99
  5. Step 5: Solve for x
    x = 423,924,961,671.99/618,018.18
  6. Step 6: Final answer
    x = 685,942.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.