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Finding the Fourth Proportional to 551,007, 760,328.82 and 309,234.12

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Solution

The fourth proportional to 551,007, 760,328.82 and 309,234.12 is: 426,708.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,007 : 760,328.82 = 309,234.12 : x
  2. Step 2: Convert to fraction form
    551,007/760,328.82 = 309,234.12/x
  3. Step 3: Cross multiply
    551,007x = 760,328.82 × 309,234.12
  4. Step 4: Simplify right side
    551,007x = 235,119,613,563.34
  5. Step 5: Solve for x
    x = 235,119,613,563.34/551,007
  6. Step 6: Final answer
    x = 426,708.94

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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.