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Finding the Fourth Proportional to 630,796.62, 870,369.39 and 362,472.78

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Solution

The fourth proportional to 630,796.62, 870,369.39 and 362,472.78 is: 500,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,796.62 : 870,369.39 = 362,472.78 : x
  2. Step 2: Convert to fraction form
    630,796.62/870,369.39 = 362,472.78/x
  3. Step 3: Cross multiply
    630,796.62x = 870,369.39 × 362,472.78
  4. Step 4: Simplify right side
    630,796.62x = 315,485,212,420.20
  5. Step 5: Solve for x
    x = 315,485,212,420.20/630,796.62
  6. Step 6: Final answer
    x = 500,137.77

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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.