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Finding the Fourth Proportional to 721,958.25, 994,077.05 and 641,245.53

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Solution

The fourth proportional to 721,958.25, 994,077.05 and 641,245.53 is: 882,942.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,958.25 : 994,077.05 = 641,245.53 : x
  2. Step 2: Convert to fraction form
    721,958.25/994,077.05 = 641,245.53/x
  3. Step 3: Cross multiply
    721,958.25x = 994,077.05 × 641,245.53
  4. Step 4: Simplify right side
    721,958.25x = 637,447,461,581.86
  5. Step 5: Solve for x
    x = 637,447,461,581.86/721,958.25
  6. Step 6: Final answer
    x = 882,942.28

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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.