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Finding the Fourth Proportional to 719,543.72, 992,971.81 and 397,254.44

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Solution

The fourth proportional to 719,543.72, 992,971.81 and 397,254.44 is: 548,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,543.72 : 992,971.81 = 397,254.44 : x
  2. Step 2: Convert to fraction form
    719,543.72/992,971.81 = 397,254.44/x
  3. Step 3: Cross multiply
    719,543.72x = 992,971.81 × 397,254.44
  4. Step 4: Simplify right side
    719,543.72x = 394,462,463,296.33
  5. Step 5: Solve for x
    x = 394,462,463,296.33/719,543.72
  6. Step 6: Final answer
    x = 548,211.94

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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.