Home / 819,317.07-1,228,709.66-313,851.15

Finding the Fourth Proportional to 819,317.07, 1,228,709.66 and 313,851.15

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Solution

The fourth proportional to 819,317.07, 1,228,709.66 and 313,851.15 is: 470,674.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,317.07 : 1,228,709.66 = 313,851.15 : x
  2. Step 2: Convert to fraction form
    819,317.07/1,228,709.66 = 313,851.15/x
  3. Step 3: Cross multiply
    819,317.07x = 1,228,709.66 × 313,851.15
  4. Step 4: Simplify right side
    819,317.07x = 385,631,938,237.85
  5. Step 5: Solve for x
    x = 385,631,938,237.85/819,317.07
  6. Step 6: Final answer
    x = 470,674.85

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1.5x scale

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.