Home / 1,239,245.88-1,858,447.80-429,441.36

Finding the Fourth Proportional to 1,239,245.88, 1,858,447.80 and 429,441.36

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Solution

The fourth proportional to 1,239,245.88, 1,858,447.80 and 429,441.36 is: 644,016.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,245.88 : 1,858,447.80 = 429,441.36 : x
  2. Step 2: Convert to fraction form
    1,239,245.88/1,858,447.80 = 429,441.36/x
  3. Step 3: Cross multiply
    1,239,245.88x = 1,858,447.80 × 429,441.36
  4. Step 4: Simplify right side
    1,239,245.88x = 798,094,350,721.01
  5. Step 5: Solve for x
    x = 798,094,350,721.01/1,239,245.88
  6. Step 6: Final answer
    x = 644,016.14

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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.