Home / 725,416.20-1,088,999.10-405,822.60

Finding the Fourth Proportional to 725,416.20, 1,088,999.10 and 405,822.60

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Solution

The fourth proportional to 725,416.20, 1,088,999.10 and 405,822.60 is: 609,223.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,416.20 : 1,088,999.10 = 405,822.60 : x
  2. Step 2: Convert to fraction form
    725,416.20/1,088,999.10 = 405,822.60/x
  3. Step 3: Cross multiply
    725,416.20x = 1,088,999.10 × 405,822.60
  4. Step 4: Simplify right side
    725,416.20x = 441,940,446,159.66
  5. Step 5: Solve for x
    x = 441,940,446,159.66/725,416.20
  6. Step 6: Final answer
    x = 609,223.29

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1.5x scale

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.