Home / 815,145.90-1,223,640.45-628,982.70

Finding the Fourth Proportional to 815,145.90, 1,223,640.45 and 628,982.70

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Solution

The fourth proportional to 815,145.90, 1,223,640.45 and 628,982.70 is: 944,185.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,145.90 : 1,223,640.45 = 628,982.70 : x
  2. Step 2: Convert to fraction form
    815,145.90/1,223,640.45 = 628,982.70/x
  3. Step 3: Cross multiply
    815,145.90x = 1,223,640.45 × 628,982.70
  4. Step 4: Simplify right side
    815,145.90x = 769,648,674,070.22
  5. Step 5: Solve for x
    x = 769,648,674,070.22/815,145.90
  6. Step 6: Final answer
    x = 944,185.17

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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.