Home / 1,291,894.64-1,782,893.20-718,934.80

Finding the Fourth Proportional to 1,291,894.64, 1,782,893.20 and 718,934.80

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Solution

The fourth proportional to 1,291,894.64, 1,782,893.20 and 718,934.80 is: 992,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,894.64 : 1,782,893.20 = 718,934.80 : x
  2. Step 2: Convert to fraction form
    1,291,894.64/1,782,893.20 = 718,934.80/x
  3. Step 3: Cross multiply
    1,291,894.64x = 1,782,893.20 × 718,934.80
  4. Step 4: Simplify right side
    1,291,894.64x = 1,281,783,966,163.36
  5. Step 5: Solve for x
    x = 1,281,783,966,163.36/1,291,894.64
  6. Step 6: Final answer
    x = 992,173.76

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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.