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Finding the Fourth Proportional to 722,205.23, 996,630.93 and 399,908.39

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Solution

The fourth proportional to 722,205.23, 996,630.93 and 399,908.39 is: 551,866.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,205.23 : 996,630.93 = 399,908.39 : x
  2. Step 2: Convert to fraction form
    722,205.23/996,630.93 = 399,908.39/x
  3. Step 3: Cross multiply
    722,205.23x = 996,630.93 × 399,908.39
  4. Step 4: Simplify right side
    722,205.23x = 398,561,065,657.35
  5. Step 5: Solve for x
    x = 398,561,065,657.35/722,205.23
  6. Step 6: Final answer
    x = 551,866.77

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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.