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Finding the Fourth Proportional to 713,791.56, 985,114.64 and 427,311.60

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Solution

The fourth proportional to 713,791.56, 985,114.64 and 427,311.60 is: 589,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,791.56 : 985,114.64 = 427,311.60 : x
  2. Step 2: Convert to fraction form
    713,791.56/985,114.64 = 427,311.60/x
  3. Step 3: Cross multiply
    713,791.56x = 985,114.64 × 427,311.60
  4. Step 4: Simplify right side
    713,791.56x = 420,950,913,001.82
  5. Step 5: Solve for x
    x = 420,950,913,001.82/713,791.56
  6. Step 6: Final answer
    x = 589,739.27

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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.