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Finding the Fourth Proportional to 698,775.88, 964,313.98 and 396,986.44

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Solution

The fourth proportional to 698,775.88, 964,313.98 and 396,986.44 is: 547,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,775.88 : 964,313.98 = 396,986.44 : x
  2. Step 2: Convert to fraction form
    698,775.88/964,313.98 = 396,986.44/x
  3. Step 3: Cross multiply
    698,775.88x = 964,313.98 × 396,986.44
  4. Step 4: Simplify right side
    698,775.88x = 382,819,573,962.43
  5. Step 5: Solve for x
    x = 382,819,573,962.43/698,775.88
  6. Step 6: Final answer
    x = 547,843.14

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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.