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Finding the Fourth Proportional to 522,479.21, 783,940.73 and 285,545.10

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Solution

The fourth proportional to 522,479.21, 783,940.73 and 285,545.10 is: 428,438.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,479.21 : 783,940.73 = 285,545.10 : x
  2. Step 2: Convert to fraction form
    522,479.21/783,940.73 = 285,545.10/x
  3. Step 3: Cross multiply
    522,479.21x = 783,940.73 × 285,545.10
  4. Step 4: Simplify right side
    522,479.21x = 223,850,432,850.50
  5. Step 5: Solve for x
    x = 223,850,432,850.50/522,479.21
  6. Step 6: Final answer
    x = 428,438.93

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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.