Home / 1,246,612.80-1,871,992.80-686,049.60

Finding the Fourth Proportional to 1,246,612.80, 1,871,992.80 and 686,049.60

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Solution

The fourth proportional to 1,246,612.80, 1,871,992.80 and 686,049.60 is: 1,030,215.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,612.80 : 1,871,992.80 = 686,049.60 : x
  2. Step 2: Convert to fraction form
    1,246,612.80/1,871,992.80 = 686,049.60/x
  3. Step 3: Cross multiply
    1,246,612.80x = 1,871,992.80 × 686,049.60
  4. Step 4: Simplify right side
    1,246,612.80x = 1,284,279,911,642.88
  5. Step 5: Solve for x
    x = 1,284,279,911,642.88/1,246,612.80
  6. Step 6: Final answer
    x = 1,030,215.57

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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.