Home / 819,343.28-1,229,026.31-313,929.86

Finding the Fourth Proportional to 819,343.28, 1,229,026.31 and 313,929.86

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Solution

The fourth proportional to 819,343.28, 1,229,026.31 and 313,929.86 is: 470,899.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,343.28 : 1,229,026.31 = 313,929.86 : x
  2. Step 2: Convert to fraction form
    819,343.28/1,229,026.31 = 313,929.86/x
  3. Step 3: Cross multiply
    819,343.28x = 1,229,026.31 × 313,929.86
  4. Step 4: Simplify right side
    819,343.28x = 385,828,049,719.84
  5. Step 5: Solve for x
    x = 385,828,049,719.84/819,343.28
  6. Step 6: Final answer
    x = 470,899.15

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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.