Home / 639,566.40-959,090.40-218,625.60

Finding the Fourth Proportional to 639,566.40, 959,090.40 and 218,625.60

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Solution

The fourth proportional to 639,566.40, 959,090.40 and 218,625.60 is: 327,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,566.40 : 959,090.40 = 218,625.60 : x
  2. Step 2: Convert to fraction form
    639,566.40/959,090.40 = 218,625.60/x
  3. Step 3: Cross multiply
    639,566.40x = 959,090.40 × 218,625.60
  4. Step 4: Simplify right side
    639,566.40x = 209,681,714,154.24
  5. Step 5: Solve for x
    x = 209,681,714,154.24/639,566.40
  6. Step 6: Final answer
    x = 327,849.80

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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.