Home / 520,120.45-780,330.12-216,455.50

Finding the Fourth Proportional to 520,120.45, 780,330.12 and 216,455.50

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Solution

The fourth proportional to 520,120.45, 780,330.12 and 216,455.50 is: 324,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,120.45 : 780,330.12 = 216,455.50 : x
  2. Step 2: Convert to fraction form
    520,120.45/780,330.12 = 216,455.50/x
  3. Step 3: Cross multiply
    520,120.45x = 780,330.12 × 216,455.50
  4. Step 4: Simplify right side
    520,120.45x = 168,906,746,289.66
  5. Step 5: Solve for x
    x = 168,906,746,289.66/520,120.45
  6. Step 6: Final answer
    x = 324,745.44

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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.