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Finding the Fourth Proportional to 719,477.94, 992,887.62 and 397,188.24

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Solution

The fourth proportional to 719,477.94, 992,887.62 and 397,188.24 is: 548,124.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,477.94 : 992,887.62 = 397,188.24 : x
  2. Step 2: Convert to fraction form
    719,477.94/992,887.62 = 397,188.24/x
  3. Step 3: Cross multiply
    719,477.94x = 992,887.62 × 397,188.24
  4. Step 4: Simplify right side
    719,477.94x = 394,363,286,305.59
  5. Step 5: Solve for x
    x = 394,363,286,305.59/719,477.94
  6. Step 6: Final answer
    x = 548,124.22

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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.