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Finding the Fourth Proportional to 719,362.68, 992,720.56 and 397,072.86

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Solution

The fourth proportional to 719,362.68, 992,720.56 and 397,072.86 is: 547,960.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,362.68 : 992,720.56 = 397,072.86 : x
  2. Step 2: Convert to fraction form
    719,362.68/992,720.56 = 397,072.86/x
  3. Step 3: Cross multiply
    719,362.68x = 992,720.56 × 397,072.86
  4. Step 4: Simplify right side
    719,362.68x = 394,182,391,940.00
  5. Step 5: Solve for x
    x = 394,182,391,940.00/719,362.68
  6. Step 6: Final answer
    x = 547,960.58

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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.