Home / 639,156.56-958,736.21-259,809.56

Finding the Fourth Proportional to 639,156.56, 958,736.21 and 259,809.56

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Solution

The fourth proportional to 639,156.56, 958,736.21 and 259,809.56 is: 389,714.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,156.56 : 958,736.21 = 259,809.56 : x
  2. Step 2: Convert to fraction form
    639,156.56/958,736.21 = 259,809.56/x
  3. Step 3: Cross multiply
    639,156.56x = 958,736.21 × 259,809.56
  4. Step 4: Simplify right side
    639,156.56x = 249,088,831,577.12
  5. Step 5: Solve for x
    x = 249,088,831,577.12/639,156.56
  6. Step 6: Final answer
    x = 389,714.89

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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.