Home / 1,307,109.80-1,960,666.32-408,556.15

Finding the Fourth Proportional to 1,307,109.80, 1,960,666.32 and 408,556.15

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Solution

The fourth proportional to 1,307,109.80, 1,960,666.32 and 408,556.15 is: 612,834.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307,109.80 : 1,960,666.32 = 408,556.15 : x
  2. Step 2: Convert to fraction form
    1,307,109.80/1,960,666.32 = 408,556.15/x
  3. Step 3: Cross multiply
    1,307,109.80x = 1,960,666.32 × 408,556.15
  4. Step 4: Simplify right side
    1,307,109.80x = 801,042,283,133.87
  5. Step 5: Solve for x
    x = 801,042,283,133.87/1,307,109.80
  6. Step 6: Final answer
    x = 612,834.73

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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.