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Finding the Fourth Proportional to 665,102.40, 996,559.20 and 384,129.60

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Solution

The fourth proportional to 665,102.40, 996,559.20 and 384,129.60 is: 575,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,102.40 : 996,559.20 = 384,129.60 : x
  2. Step 2: Convert to fraction form
    665,102.40/996,559.20 = 384,129.60/x
  3. Step 3: Cross multiply
    665,102.40x = 996,559.20 × 384,129.60
  4. Step 4: Simplify right side
    665,102.40x = 382,807,886,872.32
  5. Step 5: Solve for x
    x = 382,807,886,872.32/665,102.40
  6. Step 6: Final answer
    x = 575,562.33

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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.