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Finding the Fourth Proportional to 719,791.18, 993,303.77 and 397,494.81

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Solution

The fourth proportional to 719,791.18, 993,303.77 and 397,494.81 is: 548,538.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,791.18 : 993,303.77 = 397,494.81 : x
  2. Step 2: Convert to fraction form
    719,791.18/993,303.77 = 397,494.81/x
  3. Step 3: Cross multiply
    719,791.18x = 993,303.77 × 397,494.81
  4. Step 4: Simplify right side
    719,791.18x = 394,833,091,340.96
  5. Step 5: Solve for x
    x = 394,833,091,340.96/719,791.18
  6. Step 6: Final answer
    x = 548,538.39

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Double scale
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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.