Home / 665,331.35-996,848.85-309,615.80

Finding the Fourth Proportional to 665,331.35, 996,848.85 and 309,615.80

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Solution

The fourth proportional to 665,331.35, 996,848.85 and 309,615.80 is: 463,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,331.35 : 996,848.85 = 309,615.80 : x
  2. Step 2: Convert to fraction form
    665,331.35/996,848.85 = 309,615.80/x
  3. Step 3: Cross multiply
    665,331.35x = 996,848.85 × 309,615.80
  4. Step 4: Simplify right side
    665,331.35x = 308,640,154,171.83
  5. Step 5: Solve for x
    x = 308,640,154,171.83/665,331.35
  6. Step 6: Final answer
    x = 463,889.39

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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.