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Finding the Fourth Proportional to 520,286.04, 780,050.58 and 351,387.68

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Solution

The fourth proportional to 520,286.04, 780,050.58 and 351,387.68 is: 526,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,286.04 : 780,050.58 = 351,387.68 : x
  2. Step 2: Convert to fraction form
    520,286.04/780,050.58 = 351,387.68/x
  3. Step 3: Cross multiply
    520,286.04x = 780,050.58 × 351,387.68
  4. Step 4: Simplify right side
    520,286.04x = 274,100,163,588.85
  5. Step 5: Solve for x
    x = 274,100,163,588.85/520,286.04
  6. Step 6: Final answer
    x = 526,825.90

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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.