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Finding the Fourth Proportional to 557,280.68, 769,169.70 and 366,311.72

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Solution

The fourth proportional to 557,280.68, 769,169.70 and 366,311.72 is: 505,590.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,280.68 : 769,169.70 = 366,311.72 : x
  2. Step 2: Convert to fraction form
    557,280.68/769,169.70 = 366,311.72/x
  3. Step 3: Cross multiply
    557,280.68x = 769,169.70 × 366,311.72
  4. Step 4: Simplify right side
    557,280.68x = 281,755,875,778.88
  5. Step 5: Solve for x
    x = 281,755,875,778.88/557,280.68
  6. Step 6: Final answer
    x = 505,590.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.