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Finding the Fourth Proportional to 719,567.96, 992,997.43 and 397,271.18

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Solution

The fourth proportional to 719,567.96, 992,997.43 and 397,271.18 is: 548,230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,567.96 : 992,997.43 = 397,271.18 : x
  2. Step 2: Convert to fraction form
    719,567.96/992,997.43 = 397,271.18/x
  3. Step 3: Cross multiply
    719,567.96x = 992,997.43 × 397,271.18
  4. Step 4: Simplify right side
    719,567.96x = 394,489,262,242.38
  5. Step 5: Solve for x
    x = 394,489,262,242.38/719,567.96
  6. Step 6: Final answer
    x = 548,230.73

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Double scale
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Similar ratio
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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.