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Finding the Fourth Proportional to 719,417.96, 992,796.97 and 397,128.27

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Solution

The fourth proportional to 719,417.96, 992,796.97 and 397,128.27 is: 548,037.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,417.96 : 992,796.97 = 397,128.27 : x
  2. Step 2: Convert to fraction form
    719,417.96/992,796.97 = 397,128.27/x
  3. Step 3: Cross multiply
    719,417.96x = 992,796.97 × 397,128.27
  4. Step 4: Simplify right side
    719,417.96x = 394,267,746,632.13
  5. Step 5: Solve for x
    x = 394,267,746,632.13/719,417.96
  6. Step 6: Final answer
    x = 548,037.12

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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.