Home / 1,298,419.15-1,791,911.15-717,629.80

Finding the Fourth Proportional to 1,298,419.15, 1,791,911.15 and 717,629.80

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Solution

The fourth proportional to 1,298,419.15, 1,791,911.15 and 717,629.80 is: 990,380.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,419.15 : 1,791,911.15 = 717,629.80 : x
  2. Step 2: Convert to fraction form
    1,298,419.15/1,791,911.15 = 717,629.80/x
  3. Step 3: Cross multiply
    1,298,419.15x = 1,791,911.15 × 717,629.80
  4. Step 4: Simplify right side
    1,298,419.15x = 1,285,928,840,192.27
  5. Step 5: Solve for x
    x = 1,285,928,840,192.27/1,298,419.15
  6. Step 6: Final answer
    x = 990,380.37

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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.