Home / 1,271,309.12-1,753,904.96-818,862.72

Finding the Fourth Proportional to 1,271,309.12, 1,753,904.96 and 818,862.72

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Solution

The fourth proportional to 1,271,309.12, 1,753,904.96 and 818,862.72 is: 1,129,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,309.12 : 1,753,904.96 = 818,862.72 : x
  2. Step 2: Convert to fraction form
    1,271,309.12/1,753,904.96 = 818,862.72/x
  3. Step 3: Cross multiply
    1,271,309.12x = 1,753,904.96 × 818,862.72
  4. Step 4: Simplify right side
    1,271,309.12x = 1,436,207,386,167.09
  5. Step 5: Solve for x
    x = 1,436,207,386,167.09/1,271,309.12
  6. Step 6: Final answer
    x = 1,129,707.45

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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.