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Finding the Fourth Proportional to 719,014.82, 992,261.21 and 396,745.67

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Solution

The fourth proportional to 719,014.82, 992,261.21 and 396,745.67 is: 547,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,014.82 : 992,261.21 = 396,745.67 : x
  2. Step 2: Convert to fraction form
    719,014.82/992,261.21 = 396,745.67/x
  3. Step 3: Cross multiply
    719,014.82x = 992,261.21 × 396,745.67
  4. Step 4: Simplify right side
    719,014.82x = 393,675,341,305.08
  5. Step 5: Solve for x
    x = 393,675,341,305.08/719,014.82
  6. Step 6: Final answer
    x = 547,520.49

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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.