Home / 1,189,871.13-1,642,085.15-680,659.77

Finding the Fourth Proportional to 1,189,871.13, 1,642,085.15 and 680,659.77

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Solution

The fourth proportional to 1,189,871.13, 1,642,085.15 and 680,659.77 is: 939,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,871.13 : 1,642,085.15 = 680,659.77 : x
  2. Step 2: Convert to fraction form
    1,189,871.13/1,642,085.15 = 680,659.77/x
  3. Step 3: Cross multiply
    1,189,871.13x = 1,642,085.15 × 680,659.77
  4. Step 4: Simplify right side
    1,189,871.13x = 1,117,701,297,116.12
  5. Step 5: Solve for x
    x = 1,117,701,297,116.12/1,189,871.13
  6. Step 6: Final answer
    x = 939,346.51

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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.