Home / 819,314.56-1,228,127.28-313,737.52

Finding the Fourth Proportional to 819,314.56, 1,228,127.28 and 313,737.52

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Solution

The fourth proportional to 819,314.56, 1,228,127.28 and 313,737.52 is: 470,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,314.56 : 1,228,127.28 = 313,737.52 : x
  2. Step 2: Convert to fraction form
    819,314.56/1,228,127.28 = 313,737.52/x
  3. Step 3: Cross multiply
    819,314.56x = 1,228,127.28 × 313,737.52
  4. Step 4: Simplify right side
    819,314.56x = 385,309,607,071.55
  5. Step 5: Solve for x
    x = 385,309,607,071.55/819,314.56
  6. Step 6: Final answer
    x = 470,282.88

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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.