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Finding the Fourth Proportional to 719,498.12, 992,881.31 and 397,201.31

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Solution

The fourth proportional to 719,498.12, 992,881.31 and 397,201.31 is: 548,123.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,498.12 : 992,881.31 = 397,201.31 : x
  2. Step 2: Convert to fraction form
    719,498.12/992,881.31 = 397,201.31/x
  3. Step 3: Cross multiply
    719,498.12x = 992,881.31 × 397,201.31
  4. Step 4: Simplify right side
    719,498.12x = 394,373,750,056.10
  5. Step 5: Solve for x
    x = 394,373,750,056.10/719,498.12
  6. Step 6: Final answer
    x = 548,123.39

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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.