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Finding the Fourth Proportional to 552,114.30, 828,171.45 and 489,128.70

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Solution

The fourth proportional to 552,114.30, 828,171.45 and 489,128.70 is: 733,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,114.30 : 828,171.45 = 489,128.70 : x
  2. Step 2: Convert to fraction form
    552,114.30/828,171.45 = 489,128.70/x
  3. Step 3: Cross multiply
    552,114.30x = 828,171.45 × 489,128.70
  4. Step 4: Simplify right side
    552,114.30x = 405,082,424,715.62
  5. Step 5: Solve for x
    x = 405,082,424,715.62/552,114.30
  6. Step 6: Final answer
    x = 733,693.05

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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.