Home / 819,316.82-1,228,709.28-313,850.90

Finding the Fourth Proportional to 819,316.82, 1,228,709.28 and 313,850.90

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Solution

The fourth proportional to 819,316.82, 1,228,709.28 and 313,850.90 is: 470,674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,316.82 : 1,228,709.28 = 313,850.90 : x
  2. Step 2: Convert to fraction form
    819,316.82/1,228,709.28 = 313,850.90/x
  3. Step 3: Cross multiply
    819,316.82x = 1,228,709.28 × 313,850.90
  4. Step 4: Simplify right side
    819,316.82x = 385,631,513,366.35
  5. Step 5: Solve for x
    x = 385,631,513,366.35/819,316.82
  6. Step 6: Final answer
    x = 470,674.47

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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.