Home / 725,434.20-1,089,026.10-405,840.60

Finding the Fourth Proportional to 725,434.20, 1,089,026.10 and 405,840.60

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Solution

The fourth proportional to 725,434.20, 1,089,026.10 and 405,840.60 is: 609,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,434.20 : 1,089,026.10 = 405,840.60 : x
  2. Step 2: Convert to fraction form
    725,434.20/1,089,026.10 = 405,840.60/x
  3. Step 3: Cross multiply
    725,434.20x = 1,089,026.10 × 405,840.60
  4. Step 4: Simplify right side
    725,434.20x = 441,971,005,839.66
  5. Step 5: Solve for x
    x = 441,971,005,839.66/725,434.20
  6. Step 6: Final answer
    x = 609,250.30

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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.