Home / 1,423,405.80-2,131,998.30-1,105,367.40

Finding the Fourth Proportional to 1,423,405.80, 2,131,998.30 and 1,105,367.40

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Solution

The fourth proportional to 1,423,405.80, 2,131,998.30 and 1,105,367.40 is: 1,655,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,405.80 : 2,131,998.30 = 1,105,367.40 : x
  2. Step 2: Convert to fraction form
    1,423,405.80/2,131,998.30 = 1,105,367.40/x
  3. Step 3: Cross multiply
    1,423,405.80x = 2,131,998.30 × 1,105,367.40
  4. Step 4: Simplify right side
    1,423,405.80x = 2,356,641,417,675.42
  5. Step 5: Solve for x
    x = 2,356,641,417,675.42/1,423,405.80
  6. Step 6: Final answer
    x = 1,655,635.67

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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.