Home / 520,200.30-780,106.05-361,958.70

Finding the Fourth Proportional to 520,200.30, 780,106.05 and 361,958.70

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Solution

The fourth proportional to 520,200.30, 780,106.05 and 361,958.70 is: 542,802.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,200.30 : 780,106.05 = 361,958.70 : x
  2. Step 2: Convert to fraction form
    520,200.30/780,106.05 = 361,958.70/x
  3. Step 3: Cross multiply
    520,200.30x = 780,106.05 × 361,958.70
  4. Step 4: Simplify right side
    520,200.30x = 282,366,171,720.14
  5. Step 5: Solve for x
    x = 282,366,171,720.14/520,200.30
  6. Step 6: Final answer
    x = 542,802.79

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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.