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Finding the Fourth Proportional to 722,244.42, 996,684.93 and 399,947.58

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Solution

The fourth proportional to 722,244.42, 996,684.93 and 399,947.58 is: 551,920.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,244.42 : 996,684.93 = 399,947.58 : x
  2. Step 2: Convert to fraction form
    722,244.42/996,684.93 = 399,947.58/x
  3. Step 3: Cross multiply
    722,244.42x = 996,684.93 × 399,947.58
  4. Step 4: Simplify right side
    722,244.42x = 398,621,725,775.97
  5. Step 5: Solve for x
    x = 398,621,725,775.97/722,244.42
  6. Step 6: Final answer
    x = 551,920.81

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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.