Home / 819,346.28-1,229,030.81-313,932.86

Finding the Fourth Proportional to 819,346.28, 1,229,030.81 and 313,932.86

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Solution

The fourth proportional to 819,346.28, 1,229,030.81 and 313,932.86 is: 470,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,346.28 : 1,229,030.81 = 313,932.86 : x
  2. Step 2: Convert to fraction form
    819,346.28/1,229,030.81 = 313,932.86/x
  3. Step 3: Cross multiply
    819,346.28x = 1,229,030.81 × 313,932.86
  4. Step 4: Simplify right side
    819,346.28x = 385,833,149,496.60
  5. Step 5: Solve for x
    x = 385,833,149,496.60/819,346.28
  6. Step 6: Final answer
    x = 470,903.65

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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.