Home / 520,155.10-780,427.05-204,831.82

Finding the Fourth Proportional to 520,155.10, 780,427.05 and 204,831.82

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Solution

The fourth proportional to 520,155.10, 780,427.05 and 204,831.82 is: 307,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,155.10 : 780,427.05 = 204,831.82 : x
  2. Step 2: Convert to fraction form
    520,155.10/780,427.05 = 204,831.82/x
  3. Step 3: Cross multiply
    520,155.10x = 780,427.05 × 204,831.82
  4. Step 4: Simplify right side
    520,155.10x = 159,856,293,028.73
  5. Step 5: Solve for x
    x = 159,856,293,028.73/520,155.10
  6. Step 6: Final answer
    x = 307,324.28

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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.