Home / 1,291,711.30-1,782,808.29-855,359.50

Finding the Fourth Proportional to 1,291,711.30, 1,782,808.29 and 855,359.50

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Solution

The fourth proportional to 1,291,711.30, 1,782,808.29 and 855,359.50 is: 1,180,559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,711.30 : 1,782,808.29 = 855,359.50 : x
  2. Step 2: Convert to fraction form
    1,291,711.30/1,782,808.29 = 855,359.50/x
  3. Step 3: Cross multiply
    1,291,711.30x = 1,782,808.29 × 855,359.50
  4. Step 4: Simplify right side
    1,291,711.30x = 1,524,942,007,530.26
  5. Step 5: Solve for x
    x = 1,524,942,007,530.26/1,291,711.30
  6. Step 6: Final answer
    x = 1,180,559.47

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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.