Home / 1,222,765.79-1,687,469.48-678,901.64

Finding the Fourth Proportional to 1,222,765.79, 1,687,469.48 and 678,901.64

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Solution

The fourth proportional to 1,222,765.79, 1,687,469.48 and 678,901.64 is: 936,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,765.79 : 1,687,469.48 = 678,901.64 : x
  2. Step 2: Convert to fraction form
    1,222,765.79/1,687,469.48 = 678,901.64/x
  3. Step 3: Cross multiply
    1,222,765.79x = 1,687,469.48 × 678,901.64
  4. Step 4: Simplify right side
    1,222,765.79x = 1,145,625,803,337.88
  5. Step 5: Solve for x
    x = 1,145,625,803,337.88/1,222,765.79
  6. Step 6: Final answer
    x = 936,913.53

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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.