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Finding the Fourth Proportional to 719,490.41, 992,870.73 and 397,193.58

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Solution

The fourth proportional to 719,490.41, 992,870.73 and 397,193.58 is: 548,112.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,490.41 : 992,870.73 = 397,193.58 : x
  2. Step 2: Convert to fraction form
    719,490.41/992,870.73 = 397,193.58/x
  3. Step 3: Cross multiply
    719,490.41x = 992,870.73 × 397,193.58
  4. Step 4: Simplify right side
    719,490.41x = 394,361,879,725.91
  5. Step 5: Solve for x
    x = 394,361,879,725.91/719,490.41
  6. Step 6: Final answer
    x = 548,112.77

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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.