Home / 725,321.28-1,088,166.45-426,054.94

Finding the Fourth Proportional to 725,321.28, 1,088,166.45 and 426,054.94

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Solution

The fourth proportional to 725,321.28, 1,088,166.45 and 426,054.94 is: 639,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,321.28 : 1,088,166.45 = 426,054.94 : x
  2. Step 2: Convert to fraction form
    725,321.28/1,088,166.45 = 426,054.94/x
  3. Step 3: Cross multiply
    725,321.28x = 1,088,166.45 × 426,054.94
  4. Step 4: Simplify right side
    725,321.28x = 463,618,690,442.05
  5. Step 5: Solve for x
    x = 463,618,690,442.05/725,321.28
  6. Step 6: Final answer
    x = 639,190.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.