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Finding the Fourth Proportional to 719,635.16, 993,077.60 and 397,338.32

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Solution

The fourth proportional to 719,635.16, 993,077.60 and 397,338.32 is: 548,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,635.16 : 993,077.60 = 397,338.32 : x
  2. Step 2: Convert to fraction form
    719,635.16/993,077.60 = 397,338.32/x
  3. Step 3: Cross multiply
    719,635.16x = 993,077.60 × 397,338.32
  4. Step 4: Simplify right side
    719,635.16x = 394,587,785,213.63
  5. Step 5: Solve for x
    x = 394,587,785,213.63/719,635.16
  6. Step 6: Final answer
    x = 548,316.43

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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.