Home / 1,868,121.86-2,802,185.52-520,288.34

Finding the Fourth Proportional to 1,868,121.86, 2,802,185.52 and 520,288.34

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Solution

The fourth proportional to 1,868,121.86, 2,802,185.52 and 520,288.34 is: 780,433.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,121.86 : 2,802,185.52 = 520,288.34 : x
  2. Step 2: Convert to fraction form
    1,868,121.86/2,802,185.52 = 520,288.34/x
  3. Step 3: Cross multiply
    1,868,121.86x = 2,802,185.52 × 520,288.34
  4. Step 4: Simplify right side
    1,868,121.86x = 1,457,944,452,572.84
  5. Step 5: Solve for x
    x = 1,457,944,452,572.84/1,868,121.86
  6. Step 6: Final answer
    x = 780,433.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.