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Finding the Fourth Proportional to 722,213.73, 996,573.87 and 399,842.91

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Solution

The fourth proportional to 722,213.73, 996,573.87 and 399,842.91 is: 551,738.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,213.73 : 996,573.87 = 399,842.91 : x
  2. Step 2: Convert to fraction form
    722,213.73/996,573.87 = 399,842.91/x
  3. Step 3: Cross multiply
    722,213.73x = 996,573.87 × 399,842.91
  4. Step 4: Simplify right side
    722,213.73x = 398,472,996,210.76
  5. Step 5: Solve for x
    x = 398,472,996,210.76/722,213.73
  6. Step 6: Final answer
    x = 551,738.33

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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.