Home / 639,114.37-958,695.85-212,688.25

Finding the Fourth Proportional to 639,114.37, 958,695.85 and 212,688.25

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Solution

The fourth proportional to 639,114.37, 958,695.85 and 212,688.25 is: 319,040.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,114.37 : 958,695.85 = 212,688.25 : x
  2. Step 2: Convert to fraction form
    639,114.37/958,695.85 = 212,688.25/x
  3. Step 3: Cross multiply
    639,114.37x = 958,695.85 × 212,688.25
  4. Step 4: Simplify right side
    639,114.37x = 203,903,340,487.88
  5. Step 5: Solve for x
    x = 203,903,340,487.88/639,114.37
  6. Step 6: Final answer
    x = 319,040.46

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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.