Home / 1,291,710.80-1,782,807.60-855,359

Finding the Fourth Proportional to 1,291,710.80, 1,782,807.60 and 855,359

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Solution

The fourth proportional to 1,291,710.80, 1,782,807.60 and 855,359 is: 1,180,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,710.80 : 1,782,807.60 = 855,359 : x
  2. Step 2: Convert to fraction form
    1,291,710.80/1,782,807.60 = 855,359/x
  3. Step 3: Cross multiply
    1,291,710.80x = 1,782,807.60 × 855,359
  4. Step 4: Simplify right side
    1,291,710.80x = 1,524,940,525,928.40
  5. Step 5: Solve for x
    x = 1,524,940,525,928.40/1,291,710.80
  6. Step 6: Final answer
    x = 1,180,558.78

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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.