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Finding the Fourth Proportional to 665,036.70, 997,555.05 and 310,086.60

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Solution

The fourth proportional to 665,036.70, 997,555.05 and 310,086.60 is: 465,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,036.70 : 997,555.05 = 310,086.60 : x
  2. Step 2: Convert to fraction form
    665,036.70/997,555.05 = 310,086.60/x
  3. Step 3: Cross multiply
    665,036.70x = 997,555.05 × 310,086.60
  4. Step 4: Simplify right side
    665,036.70x = 309,328,453,767.33
  5. Step 5: Solve for x
    x = 309,328,453,767.33/665,036.70
  6. Step 6: Final answer
    x = 465,129.90

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Similar ratio
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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.