Home / 679,750.20-1,018,458.90-323,998.20

Finding the Fourth Proportional to 679,750.20, 1,018,458.90 and 323,998.20

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Solution

The fourth proportional to 679,750.20, 1,018,458.90 and 323,998.20 is: 485,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,750.20 : 1,018,458.90 = 323,998.20 : x
  2. Step 2: Convert to fraction form
    679,750.20/1,018,458.90 = 323,998.20/x
  3. Step 3: Cross multiply
    679,750.20x = 1,018,458.90 × 323,998.20
  4. Step 4: Simplify right side
    679,750.20x = 329,978,850,373.98
  5. Step 5: Solve for x
    x = 329,978,850,373.98/679,750.20
  6. Step 6: Final answer
    x = 485,441.34

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Double scale
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Similar ratio
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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.