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Finding the Fourth Proportional to 664,107.40, 994,994.70 and 545,134.60

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Solution

The fourth proportional to 664,107.40, 994,994.70 and 545,134.60 is: 816,744.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,107.40 : 994,994.70 = 545,134.60 : x
  2. Step 2: Convert to fraction form
    664,107.40/994,994.70 = 545,134.60/x
  3. Step 3: Cross multiply
    664,107.40x = 994,994.70 × 545,134.60
  4. Step 4: Simplify right side
    664,107.40x = 542,406,037,786.62
  5. Step 5: Solve for x
    x = 542,406,037,786.62/664,107.40
  6. Step 6: Final answer
    x = 816,744.46

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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.