Home / 1,765,107.40-2,648,352.30-643,289.80

Finding the Fourth Proportional to 1,765,107.40, 2,648,352.30 and 643,289.80

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Solution

The fourth proportional to 1,765,107.40, 2,648,352.30 and 643,289.80 is: 965,186.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765,107.40 : 2,648,352.30 = 643,289.80 : x
  2. Step 2: Convert to fraction form
    1,765,107.40/2,648,352.30 = 643,289.80/x
  3. Step 3: Cross multiply
    1,765,107.40x = 2,648,352.30 × 643,289.80
  4. Step 4: Simplify right side
    1,765,107.40x = 1,703,658,021,396.54
  5. Step 5: Solve for x
    x = 1,703,658,021,396.54/1,765,107.40
  6. Step 6: Final answer
    x = 965,186.61

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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.