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Finding the Fourth Proportional to 551,123.38, 760,497.73 and 309,350.54

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Solution

The fourth proportional to 551,123.38, 760,497.73 and 309,350.54 is: 426,874.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,123.38 : 760,497.73 = 309,350.54 : x
  2. Step 2: Convert to fraction form
    551,123.38/760,497.73 = 309,350.54/x
  3. Step 3: Cross multiply
    551,123.38x = 760,497.73 × 309,350.54
  4. Step 4: Simplify right side
    551,123.38x = 235,260,383,444.27
  5. Step 5: Solve for x
    x = 235,260,383,444.27/551,123.38
  6. Step 6: Final answer
    x = 426,874.26

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1.5x scale

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.