Home / 1,393,759.08-1,923,154.32-820,913.28

Finding the Fourth Proportional to 1,393,759.08, 1,923,154.32 and 820,913.28

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Solution

The fourth proportional to 1,393,759.08, 1,923,154.32 and 820,913.28 is: 1,132,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,759.08 : 1,923,154.32 = 820,913.28 : x
  2. Step 2: Convert to fraction form
    1,393,759.08/1,923,154.32 = 820,913.28/x
  3. Step 3: Cross multiply
    1,393,759.08x = 1,923,154.32 × 820,913.28
  4. Step 4: Simplify right side
    1,393,759.08x = 1,578,742,920,777.37
  5. Step 5: Solve for x
    x = 1,578,742,920,777.37/1,393,759.08
  6. Step 6: Final answer
    x = 1,132,722.97

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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.