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Finding the Fourth Proportional to 722,352.70, 996,834.54 and 400,076.38

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Solution

The fourth proportional to 722,352.70, 996,834.54 and 400,076.38 is: 552,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,352.70 : 996,834.54 = 400,076.38 : x
  2. Step 2: Convert to fraction form
    722,352.70/996,834.54 = 400,076.38/x
  3. Step 3: Cross multiply
    722,352.70x = 996,834.54 × 400,076.38
  4. Step 4: Simplify right side
    722,352.70x = 398,809,954,222.17
  5. Step 5: Solve for x
    x = 398,809,954,222.17/722,352.70
  6. Step 6: Final answer
    x = 552,098.66

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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.