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Finding the Fourth Proportional to 665,229.40, 996,749.70 and 384,256.60

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Solution

The fourth proportional to 665,229.40, 996,749.70 and 384,256.60 is: 575,752.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,229.40 : 996,749.70 = 384,256.60 : x
  2. Step 2: Convert to fraction form
    665,229.40/996,749.70 = 384,256.60/x
  3. Step 3: Cross multiply
    665,229.40x = 996,749.70 × 384,256.60
  4. Step 4: Simplify right side
    665,229.40x = 383,007,650,773.02
  5. Step 5: Solve for x
    x = 383,007,650,773.02/665,229.40
  6. Step 6: Final answer
    x = 575,752.74

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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.