Home / 1,393,700.70-1,923,344.55-820,635.42

Finding the Fourth Proportional to 1,393,700.70, 1,923,344.55 and 820,635.42

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Solution

The fourth proportional to 1,393,700.70, 1,923,344.55 and 820,635.42 is: 1,132,499.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,700.70 : 1,923,344.55 = 820,635.42 : x
  2. Step 2: Convert to fraction form
    1,393,700.70/1,923,344.55 = 820,635.42/x
  3. Step 3: Cross multiply
    1,393,700.70x = 1,923,344.55 × 820,635.42
  4. Step 4: Simplify right side
    1,393,700.70x = 1,578,364,662,593.96
  5. Step 5: Solve for x
    x = 1,578,364,662,593.96/1,393,700.70
  6. Step 6: Final answer
    x = 1,132,499.01

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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.