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Finding the Fourth Proportional to 719,633.16, 993,074.84 and 397,336.32

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Solution

The fourth proportional to 719,633.16, 993,074.84 and 397,336.32 is: 548,313.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,633.16 : 993,074.84 = 397,336.32 : x
  2. Step 2: Convert to fraction form
    719,633.16/993,074.84 = 397,336.32/x
  3. Step 3: Cross multiply
    719,633.16x = 993,074.84 × 397,336.32
  4. Step 4: Simplify right side
    719,633.16x = 394,584,702,410.19
  5. Step 5: Solve for x
    x = 394,584,702,410.19/719,633.16
  6. Step 6: Final answer
    x = 548,313.67

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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.