Home / 1,028,278.45-1,420,502.35-821,275.05

Finding the Fourth Proportional to 1,028,278.45, 1,420,502.35 and 821,275.05

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Solution

The fourth proportional to 1,028,278.45, 1,420,502.35 and 821,275.05 is: 1,134,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,278.45 : 1,420,502.35 = 821,275.05 : x
  2. Step 2: Convert to fraction form
    1,028,278.45/1,420,502.35 = 821,275.05/x
  3. Step 3: Cross multiply
    1,028,278.45x = 1,420,502.35 × 821,275.05
  4. Step 4: Simplify right side
    1,028,278.45x = 1,166,623,135,344.63
  5. Step 5: Solve for x
    x = 1,166,623,135,344.63/1,028,278.45
  6. Step 6: Final answer
    x = 1,134,540.10

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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.