Home / 1,433,816.08-1,978,434.67-821,856.22

Finding the Fourth Proportional to 1,433,816.08, 1,978,434.67 and 821,856.22

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Solution

The fourth proportional to 1,433,816.08, 1,978,434.67 and 821,856.22 is: 1,134,028.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,816.08 : 1,978,434.67 = 821,856.22 : x
  2. Step 2: Convert to fraction form
    1,433,816.08/1,978,434.67 = 821,856.22/x
  3. Step 3: Cross multiply
    1,433,816.08x = 1,978,434.67 × 821,856.22
  4. Step 4: Simplify right side
    1,433,816.08x = 1,625,988,839,403.15
  5. Step 5: Solve for x
    x = 1,625,988,839,403.15/1,433,816.08
  6. Step 6: Final answer
    x = 1,134,028.88

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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.