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Finding the Fourth Proportional to 722,488.76, 996,939.96 and 416,576.60

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Solution

The fourth proportional to 722,488.76, 996,939.96 and 416,576.60 is: 574,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,488.76 : 996,939.96 = 416,576.60 : x
  2. Step 2: Convert to fraction form
    722,488.76/996,939.96 = 416,576.60/x
  3. Step 3: Cross multiply
    722,488.76x = 996,939.96 × 416,576.60
  4. Step 4: Simplify right side
    722,488.76x = 415,301,858,940.94
  5. Step 5: Solve for x
    x = 415,301,858,940.94/722,488.76
  6. Step 6: Final answer
    x = 574,821.20

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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.