Home / 1,442,556.81-1,990,554.94-830,908.50

Finding the Fourth Proportional to 1,442,556.81, 1,990,554.94 and 830,908.50

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Solution

The fourth proportional to 1,442,556.81, 1,990,554.94 and 830,908.50 is: 1,146,553.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,556.81 : 1,990,554.94 = 830,908.50 : x
  2. Step 2: Convert to fraction form
    1,442,556.81/1,990,554.94 = 830,908.50/x
  3. Step 3: Cross multiply
    1,442,556.81x = 1,990,554.94 × 830,908.50
  4. Step 4: Simplify right side
    1,442,556.81x = 1,653,969,019,362.99
  5. Step 5: Solve for x
    x = 1,653,969,019,362.99/1,442,556.81
  6. Step 6: Final answer
    x = 1,146,553.82

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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.