Home / 1,225,369.72-1,690,995.18-688,825.72

Finding the Fourth Proportional to 1,225,369.72, 1,690,995.18 and 688,825.72

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Solution

The fourth proportional to 1,225,369.72, 1,690,995.18 and 688,825.72 is: 950,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,369.72 : 1,690,995.18 = 688,825.72 : x
  2. Step 2: Convert to fraction form
    1,225,369.72/1,690,995.18 = 688,825.72/x
  3. Step 3: Cross multiply
    1,225,369.72x = 1,690,995.18 × 688,825.72
  4. Step 4: Simplify right side
    1,225,369.72x = 1,164,800,972,380.03
  5. Step 5: Solve for x
    x = 1,164,800,972,380.03/1,225,369.72
  6. Step 6: Final answer
    x = 950,571.04

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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.