Home / 1,438,519.80-2,157,779.70-491,806.20

Finding the Fourth Proportional to 1,438,519.80, 2,157,779.70 and 491,806.20

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Solution

The fourth proportional to 1,438,519.80, 2,157,779.70 and 491,806.20 is: 737,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,519.80 : 2,157,779.70 = 491,806.20 : x
  2. Step 2: Convert to fraction form
    1,438,519.80/2,157,779.70 = 491,806.20/x
  3. Step 3: Cross multiply
    1,438,519.80x = 2,157,779.70 × 491,806.20
  4. Step 4: Simplify right side
    1,438,519.80x = 1,061,209,434,694.14
  5. Step 5: Solve for x
    x = 1,061,209,434,694.14/1,438,519.80
  6. Step 6: Final answer
    x = 737,709.30

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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.