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Finding the Fourth Proportional to 719,864.65, 993,407.38 and 397,596.84

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Solution

The fourth proportional to 719,864.65, 993,407.38 and 397,596.84 is: 548,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,864.65 : 993,407.38 = 397,596.84 : x
  2. Step 2: Convert to fraction form
    719,864.65/993,407.38 = 397,596.84/x
  3. Step 3: Cross multiply
    719,864.65x = 993,407.38 × 397,596.84
  4. Step 4: Simplify right side
    719,864.65x = 394,975,635,120.68
  5. Step 5: Solve for x
    x = 394,975,635,120.68/719,864.65
  6. Step 6: Final answer
    x = 548,680.42

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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.