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Finding the Fourth Proportional to 520,397.94, 780,065.18 and 295,282.82

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Solution

The fourth proportional to 520,397.94, 780,065.18 and 295,282.82 is: 442,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,397.94 : 780,065.18 = 295,282.82 : x
  2. Step 2: Convert to fraction form
    520,397.94/780,065.18 = 295,282.82/x
  3. Step 3: Cross multiply
    520,397.94x = 780,065.18 × 295,282.82
  4. Step 4: Simplify right side
    520,397.94x = 230,339,846,134.21
  5. Step 5: Solve for x
    x = 230,339,846,134.21/520,397.94
  6. Step 6: Final answer
    x = 442,622.52

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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.