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Finding the Fourth Proportional to 663,999.30, 996,128.55 and 284,919.30

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Solution

The fourth proportional to 663,999.30, 996,128.55 and 284,919.30 is: 427,434.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,999.30 : 996,128.55 = 284,919.30 : x
  2. Step 2: Convert to fraction form
    663,999.30/996,128.55 = 284,919.30/x
  3. Step 3: Cross multiply
    663,999.30x = 996,128.55 × 284,919.30
  4. Step 4: Simplify right side
    663,999.30x = 283,816,249,176.02
  5. Step 5: Solve for x
    x = 283,816,249,176.02/663,999.30
  6. Step 6: Final answer
    x = 427,434.56

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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.