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Finding the Fourth Proportional to 721,814.70, 996,000.04 and 399,524.04

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Solution

The fourth proportional to 721,814.70, 996,000.04 and 399,524.04 is: 551,285.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,814.70 : 996,000.04 = 399,524.04 : x
  2. Step 2: Convert to fraction form
    721,814.70/996,000.04 = 399,524.04/x
  3. Step 3: Cross multiply
    721,814.70x = 996,000.04 × 399,524.04
  4. Step 4: Simplify right side
    721,814.70x = 397,925,959,820.96
  5. Step 5: Solve for x
    x = 397,925,959,820.96/721,814.70
  6. Step 6: Final answer
    x = 551,285.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.